2025 Drugs Underdosing ICD-10-CM Codes
The 2025 Underdosing ICD-10-CM Codes list includes 516 codes for situations where a patient takes less of a prescribed drug or substance than ordered, potentially resulting in suboptimal treatment or complications. Underdosing may occur due to financial limitations, misunderstanding of instructions, or intentional avoidance of medication. Coders must ensure documentation clearly identifies underdosing and select the appropriate code from the ICD-10-CM List of Drugs and Chemicals. No external cause code is required. Accurate coding supports proper claims adjudication and clinical tracking.
- Poisoning by, adverse effect of and underdosing of agents pr
- Poisoning by, adverse effect of and underdosing of agents pr
- Poisoning by, adverse effect of and underdosing of agents pr
- Poisoning by, adverse effect of and underdosing of anestheti
- Poisoning by, adverse effect of and underdosing of antiepile
- Poisoning by, adverse effect of and underdosing of diuretics
- Poisoning by, adverse effect of and underdosing of drugs pri
- Poisoning by, adverse effect of and underdosing of hormones
- Poisoning by, adverse effect of and underdosing of narcotics
- Poisoning by, adverse effect of and underdosing of nonopioid
- Poisoning by, adverse effect of and underdosing of other sys
- Poisoning by, adverse effect of and underdosing of primarily
- Poisoning by, adverse effect of and underdosing of psychotro
- Poisoning by, adverse effect of and underdosing of systemic
- Poisoning by, adverse effect of and underdosing of topical a
T48.0X6 - Underdosing of oxytocic drugs Non-Billable
T48.0X6A - Underdosing of oxytocic drugs, initial encounter Billable
T48.0X6D - Underdosing of oxytocic drugs, subsequent encounter Billable
T48.1X6 - Underdosing of skeletal muscle relaxants [neuromuscular blocking agents] Non-Billable
T48.1X6A - Underdosing of skeletal muscle relaxants [neuromuscular blocking agents], initial encounter Billable
T48.1X6D - Underdosing of skeletal muscle relaxants [neuromuscular blocking agents], subsequent encounter Billable
T48.206 - Underdosing of unspecified drugs acting on muscles Non-Billable
T48.206A - Underdosing of unspecified drugs acting on muscles, initial encounter Billable
T48.206D - Underdosing of unspecified drugs acting on muscles, subsequent encounter Billable
T48.296 - Underdosing of other drugs acting on muscles Non-Billable
T48.296A - Underdosing of other drugs acting on muscles, initial encounter Billable
T48.296D - Underdosing of other drugs acting on muscles, subsequent encounter Billable
T48.3X6 - Underdosing of antitussives Non-Billable
T48.3X6A - Underdosing of antitussives, initial encounter Billable
T48.3X6D - Underdosing of antitussives, subsequent encounter Billable
T48.4X6 - Underdosing of expectorants Non-Billable
T48.4X6A - Underdosing of expectorants, initial encounter Billable
T48.4X6D - Underdosing of expectorants, subsequent encounter Billable
T48.5X6 - Underdosing of other anti-common-cold drugs Non-Billable
T48.5X6A - Underdosing of other anti-common-cold drugs, initial encounter Billable
T48.5X6D - Underdosing of other anti-common-cold drugs, subsequent encounter Billable
T48.6X6 - Underdosing of antiasthmatics Non-Billable
T48.6X6A - Underdosing of antiasthmatics, initial encounter Billable
T48.6X6D - Underdosing of antiasthmatics, subsequent encounter Billable
T48.906 - Underdosing of unspecified agents primarily acting on the respiratory system Non-Billable
T48.906A - Underdosing of unspecified agents primarily acting on the respiratory system, initial encounter Billable
T48.906D - Underdosing of unspecified agents primarily acting on the respiratory system, subsequent encounter Billable
T48.996A - Underdosing of other agents primarily acting on the respiratory system, initial encounter Billable
T48.996D - Underdosing of other agents primarily acting on the respiratory system, subsequent encounter Billable
T46.0X6 - Underdosing of cardiac-stimulant glycosides and drugs of similar action Non-Billable
T46.0X6A - Underdosing of cardiac-stimulant glycosides and drugs of similar action, initial encounter Billable
T46.0X6D - Underdosing of cardiac-stimulant glycosides and drugs of similar action, subsequent encounter Billable
T46.1X6 - Underdosing of calcium-channel blockers Non-Billable
T46.1X6A - Underdosing of calcium-channel blockers, initial encounter Billable
T46.1X6D - Underdosing of calcium-channel blockers, subsequent encounter Billable
T46.2X6 - Underdosing of other antidysrhythmic drugs Non-Billable
T46.2X6A - Underdosing of other antidysrhythmic drugs, initial encounter Billable
T46.2X6D - Underdosing of other antidysrhythmic drugs, subsequent encounter Billable
T46.3X6 - Underdosing of coronary vasodilators Non-Billable
T46.3X6A - Underdosing of coronary vasodilators, initial encounter Billable
T46.3X6D - Underdosing of coronary vasodilators, subsequent encounter Billable
T46.4X6 - Underdosing of angiotensin-converting-enzyme inhibitors Non-Billable
T46.4X6A - Underdosing of angiotensin-converting-enzyme inhibitors, initial encounter Billable
T46.4X6D - Underdosing of angiotensin-converting-enzyme inhibitors, subsequent encounter Billable
T46.5X6 - Underdosing of other antihypertensive drugs Non-Billable
T46.5X6A - Underdosing of other antihypertensive drugs, initial encounter Billable
T46.5X6D - Underdosing of other antihypertensive drugs, subsequent encounter Billable
T46.6X6 - Underdosing of antihyperlipidemic and antiarteriosclerotic drugs Non-Billable
T46.6X6A - Underdosing of antihyperlipidemic and antiarteriosclerotic drugs, initial encounter Billable
T46.6X6D - Underdosing of antihyperlipidemic and antiarteriosclerotic drugs, subsequent encounter Billable
T46.7X6 - Underdosing of peripheral vasodilators Non-Billable
T46.7X6A - Underdosing of peripheral vasodilators, initial encounter Billable
T46.7X6D - Underdosing of peripheral vasodilators, subsequent encounter Billable
T46.8X6 - Underdosing of antivaricose drugs, including sclerosing agents Non-Billable
T46.8X6A - Underdosing of antivaricose drugs, including sclerosing agents, initial encounter Billable
T46.8X6D - Underdosing of antivaricose drugs, including sclerosing agents, subsequent encounter Billable
T46.906 - Underdosing of unspecified agents primarily affecting the cardiovascular system Non-Billable
T46.906A - Underdosing of unspecified agents primarily affecting the cardiovascular system, initial encounter Billable
T46.906D - Underdosing of unspecified agents primarily affecting the cardiovascular system, subsequent encounter Billable
T46.996 - Underdosing of other agents primarily affecting the cardiovascular system Non-Billable
T46.996A - Underdosing of other agents primarily affecting the cardiovascular system, initial encounter Billable
T46.996D - Underdosing of other agents primarily affecting the cardiovascular system, subsequent encounter Billable
T47.0X6 - Underdosing of histamine H2-receptor blockers Non-Billable
T47.0X6A - Underdosing of histamine H2-receptor blockers, initial encounter Billable
T47.0X6D - Underdosing of histamine H2-receptor blockers, subsequent encounter Billable
T47.1X6 - Underdosing of other antacids and anti-gastric-secretion drugs Non-Billable
T47.1X6A - Underdosing of other antacids and anti-gastric-secretion drugs, initial encounter Billable
T47.1X6D - Underdosing of other antacids and anti-gastric-secretion drugs, subsequent encounter Billable
T47.2X6 - Underdosing of stimulant laxatives Non-Billable
T47.2X6A - Underdosing of stimulant laxatives, initial encounter Billable
T47.2X6D - Underdosing of stimulant laxatives, subsequent encounter Billable
T47.3X6 - Underdosing of saline and osmotic laxatives Non-Billable
T47.3X6A - Underdosing of saline and osmotic laxatives, initial encounter Billable
T47.3X6D - Underdosing of saline and osmotic laxatives, subsequent encounter Billable
T47.4X6 - Underdosing of other laxatives Non-Billable
T47.4X6A - Underdosing of other laxatives, initial encounter Billable
T47.4X6D - Underdosing of other laxatives, subsequent encounter Billable
T47.5X6 - Underdosing of digestants Non-Billable
T47.5X6A - Underdosing of digestants, initial encounter Billable
T47.5X6D - Underdosing of digestants, subsequent encounter Billable
T47.6X6 - Underdosing of antidiarrheal drugs Non-Billable
T47.6X6A - Underdosing of antidiarrheal drugs, initial encounter Billable
T47.6X6D - Underdosing of antidiarrheal drugs, subsequent encounter Billable
T47.7X6 - Underdosing of emetics Non-Billable
T47.7X6A - Underdosing of emetics, initial encounter Billable
T47.7X6D - Underdosing of emetics, subsequent encounter Billable
T47.8X6 - Underdosing of other agents primarily affecting gastrointestinal system Non-Billable
T47.8X6A - Underdosing of other agents primarily affecting gastrointestinal system, initial encounter Billable
T47.8X6D - Underdosing of other agents primarily affecting gastrointestinal system, subsequent encounter Billable
T47.96 - Underdosing of unspecified agents primarily affecting the gastrointestinal system Non-Billable
T47.96XA - Underdosing of unspecified agents primarily affecting the gastrointestinal system, initial encounter Billable
T47.96XD - Underdosing of unspecified agents primarily affecting the gastrointestinal system, subsequent encounter Billable
T41.0X6 - Underdosing of inhaled anesthetics Non-Billable
T41.0X6A - Underdosing of inhaled anesthetics, initial encounter Billable
T41.0X6D - Underdosing of inhaled anesthetics, subsequent encounter Billable
T41.1X6 - Underdosing of intravenous anesthetics Non-Billable
T41.1X6A - Underdosing of intravenous anesthetics, initial encounter Billable
T41.1X6D - Underdosing of intravenous anesthetics, subsequent encounter Billable
T41.206 - Underdosing of unspecified general anesthetics Non-Billable
T41.206A - Underdosing of unspecified general anesthetics, initial encounter Billable
T41.206D - Underdosing of unspecified general anesthetics, subsequent encounter Billable
T41.296 - Underdosing of other general anesthetics Non-Billable
T41.296A - Underdosing of other general anesthetics, initial encounter Billable
T41.296D - Underdosing of other general anesthetics, subsequent encounter Billable
T41.3X6 - Underdosing of local anesthetics Non-Billable
T41.3X6A - Underdosing of local anesthetics, initial encounter Billable
T41.3X6D - Underdosing of local anesthetics, subsequent encounter Billable
T41.46 - Underdosing of unspecified anesthetics Non-Billable
T41.46XA - Underdosing of unspecified anesthetics, initial encounter Billable
T41.46XD - Underdosing of unspecified anesthetics, subsequent encounter Billable
T41.5X6 - Underdosing of therapeutic gases Non-Billable
T41.5X6A - Underdosing of therapeutic gases, initial encounter Billable
T41.5X6D - Underdosing of therapeutic gases, subsequent encounter Billable
T42.0X6 - Underdosing of hydantoin derivatives Non-Billable
T42.0X6A - Underdosing of hydantoin derivatives, initial encounter Billable
T42.0X6D - Underdosing of hydantoin derivatives, subsequent encounter Billable
T42.1X6 - Underdosing of iminostilbenes Non-Billable
T42.1X6A - Underdosing of iminostilbenes, initial encounter Billable
T42.1X6D - Underdosing of iminostilbenes, subsequent encounter Billable
T42.2X6 - Underdosing of succinimides and oxazolidinediones Non-Billable
T42.2X6A - Underdosing of succinimides and oxazolidinediones, initial encounter Billable
T42.2X6D - Underdosing of succinimides and oxazolidinediones, subsequent encounter Billable
T42.3X6 - Underdosing of barbiturates Non-Billable
T42.3X6A - Underdosing of barbiturates, initial encounter Billable
T42.3X6D - Underdosing of barbiturates, subsequent encounter Billable
T42.4X6 - Underdosing of benzodiazepines Non-Billable
T42.4X6A - Underdosing of benzodiazepines, initial encounter Billable
T42.4X6D - Underdosing of benzodiazepines, subsequent encounter Billable
T42.5X6A - Underdosing of mixed antiepileptics, initial encounter Billable
T42.5X6D - Underdosing of mixed antiepileptics, subsequent encounter Billable
T42.6X6 - Underdosing of other antiepileptic and sedative-hypnotic drugs Non-Billable
T42.6X6A - Underdosing of other antiepileptic and sedative-hypnotic drugs, initial encounter Billable
T42.6X6D - Underdosing of other antiepileptic and sedative-hypnotic drugs, subsequent encounter Billable
T42.76 - Underdosing of unspecified antiepileptic and sedative-hypnotic drugs Non-Billable
T42.76XA - Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, initial encounter Billable
T42.76XD - Underdosing of unspecified antiepileptic and sedative-hypnotic drugs, subsequent encounter Billable
T42.8X6 - Underdosing of antiparkinsonism drugs and other central muscle-tone depressants Non-Billable
T42.8X6A - Underdosing of antiparkinsonism drugs and other central muscle-tone depressants, initial encounter Billable
T42.8X6D - Underdosing of antiparkinsonism drugs and other central muscle-tone depressants, subsequent encounter Billable
T50.0X6 - Underdosing of mineralocorticoids and their antagonists Non-Billable
T50.0X6A - Underdosing of mineralocorticoids and their antagonists, initial encounter Billable
T50.0X6D - Underdosing of mineralocorticoids and their antagonists, subsequent encounter Billable
T50.1X6 - Underdosing of loop [high-ceiling] diuretics Non-Billable
T50.1X6A - Underdosing of loop [high-ceiling] diuretics, initial encounter Billable
T50.1X6D - Underdosing of loop [high-ceiling] diuretics, subsequent encounter Billable
T50.2X6 - Underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics Non-Billable
T50.2X6A - Underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, initial encounter Billable
T50.2X6D - Underdosing of carbonic-anhydrase inhibitors, benzothiadiazides and other diuretics, subsequent encounter Billable
T50.3X6 - Underdosing of electrolytic, caloric and water-balance agents Non-Billable
T50.3X6A - Underdosing of electrolytic, caloric and water-balance agents, initial encounter Billable
T50.3X6D - Underdosing of electrolytic, caloric and water-balance agents, subsequent encounter Billable
T50.4X6 - Underdosing of drugs affecting uric acid metabolism Non-Billable
T50.4X6A - Underdosing of drugs affecting uric acid metabolism, initial encounter Billable
T50.4X6D - Underdosing of drugs affecting uric acid metabolism, subsequent encounter Billable
T50.5X6 - Underdosing of appetite depressants Non-Billable
T50.5X6A - Underdosing of appetite depressants, initial encounter Billable
T50.5X6D - Underdosing of appetite depressants, subsequent encounter Billable
T50.6X6 - Underdosing of antidotes and chelating agents Non-Billable
T50.6X6A - Underdosing of antidotes and chelating agents, initial encounter Billable
T50.6X6D - Underdosing of antidotes and chelating agents, subsequent encounter Billable
T50.7X6 - Underdosing of analeptics and opioid receptor antagonists Non-Billable
T50.7X6A - Underdosing of analeptics and opioid receptor antagonists, initial encounter Billable
T50.7X6D - Underdosing of analeptics and opioid receptor antagonists, subsequent encounter Billable
T50.8X6 - Underdosing of diagnostic agents Non-Billable
T50.8X6A - Underdosing of diagnostic agents, initial encounter Billable
T50.8X6D - Underdosing of diagnostic agents, subsequent encounter Billable
T50.906 - Underdosing of unspecified drugs, medicaments and biological substances Non-Billable
T50.906A - Underdosing of unspecified drugs, medicaments and biological substances, initial encounter Billable
T50.906D - Underdosing of unspecified drugs, medicaments and biological substances, subsequent encounter Billable
T50.916 - Underdosing of multiple unspecified drugs, medicaments and biological substances Non-Billable
T50.916A - Underdosing of multiple unspecified drugs, medicaments and biological substances, initial encounter Billable
T50.916D - Underdosing of multiple unspecified drugs, medicaments and biological substances, subsequent encounter Billable
T50.996 - Underdosing of other drugs, medicaments and biological substances Non-Billable
T50.996A - Underdosing of other drugs, medicaments and biological substances, initial encounter Billable
T50.996D - Underdosing of other drugs, medicaments and biological substances, subsequent encounter Billable
T50.A16A - Underdosing of pertussis vaccine, including combinations with a pertussis component, initial encounter Billable
T50.A16D - Underdosing of pertussis vaccine, including combinations with a pertussis component, subsequent encounter Billable
T50.A26 - Underdosing of mixed bacterial vaccines without a pertussis component Non-Billable
T50.A26A - Underdosing of mixed bacterial vaccines without a pertussis component, initial encounter Billable
T44.0X6 - Underdosing of anticholinesterase agents Non-Billable
T44.0X6A - Underdosing of anticholinesterase agents, initial encounter Billable
T44.0X6D - Underdosing of anticholinesterase agents, subsequent encounter Billable
T44.1X6 - Underdosing of other parasympathomimetics [cholinergics] Non-Billable
T44.1X6A - Underdosing of other parasympathomimetics [cholinergics], initial encounter Billable
T44.1X6D - Underdosing of other parasympathomimetics [cholinergics], subsequent encounter Billable
T44.2X6 - Underdosing of ganglionic blocking drugs Non-Billable
T44.2X6A - Underdosing of ganglionic blocking drugs, initial encounter Billable
T44.2X6D - Underdosing of ganglionic blocking drugs, subsequent encounter Billable
T44.3X6 - Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics Non-Billable
T44.3X6A - Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, initial encounter Billable
T44.3X6D - Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, subsequent encounter Billable
T44.4X6 - Underdosing of predominantly alpha-adrenoreceptor agonists Non-Billable
T44.4X6A - Underdosing of predominantly alpha-adrenoreceptor agonists, initial encounter Billable
T44.4X6D - Underdosing of predominantly alpha-adrenoreceptor agonists, subsequent encounter Billable
T44.5X6 - Underdosing of predominantly beta-adrenoreceptor agonists Non-Billable
T44.5X6A - Underdosing of predominantly beta-adrenoreceptor agonists, initial encounter Billable
T44.5X6D - Underdosing of predominantly beta-adrenoreceptor agonists, subsequent encounter Billable
T44.6X6 - Underdosing of alpha-adrenoreceptor antagonists Non-Billable
T44.6X6A - Underdosing of alpha-adrenoreceptor antagonists, initial encounter Billable
T44.6X6D - Underdosing of alpha-adrenoreceptor antagonists, subsequent encounter Billable
T44.7X6 - Underdosing of beta-adrenoreceptor antagonists Non-Billable
T44.7X6A - Underdosing of beta-adrenoreceptor antagonists, initial encounter Billable
T44.7X6D - Underdosing of beta-adrenoreceptor antagonists, subsequent encounter Billable
T44.8X6 - Underdosing of centrally-acting and adrenergic-neuron-blocking agents Non-Billable
T44.8X6A - Underdosing of centrally-acting and adrenergic-neuron-blocking agents, initial encounter Billable
T44.8X6D - Underdosing of centrally-acting and adrenergic-neuron-blocking agents, subsequent encounter Billable
T44.906 - Underdosing of unspecified drugs primarily affecting the autonomic nervous system Non-Billable
T44.906A - Underdosing of unspecified drugs primarily affecting the autonomic nervous system, initial encounter Billable
T44.906D - Underdosing of unspecified drugs primarily affecting the autonomic nervous system, subsequent encounter Billable
T44.996 - Underdosing of other drug primarily affecting the autonomic nervous system Non-Billable
T44.996A - Underdosing of other drug primarily affecting the autonomic nervous system, initial encounter Billable
T44.996D - Underdosing of other drug primarily affecting the autonomic nervous system, subsequent encounter Billable
T38.0X6 - Underdosing of glucocorticoids and synthetic analogues Non-Billable
T38.0X6A - Underdosing of glucocorticoids and synthetic analogues, initial encounter Billable
T38.0X6D - Underdosing of glucocorticoids and synthetic analogues, subsequent encounter Billable
T38.1X6 - Underdosing of thyroid hormones and substitutes Non-Billable
T38.1X6A - Underdosing of thyroid hormones and substitutes, initial encounter Billable
T38.1X6D - Underdosing of thyroid hormones and substitutes, subsequent encounter Billable
T38.2X6 - Underdosing of antithyroid drugs Non-Billable
T38.2X6A - Underdosing of antithyroid drugs, initial encounter Billable
T38.2X6D - Underdosing of antithyroid drugs, subsequent encounter Billable
T38.3X6 - Underdosing of insulin and oral hypoglycemic [antidiabetic] drugs Non-Billable
T38.3X6A - Underdosing of insulin and oral hypoglycemic [antidiabetic] drugs, initial encounter Billable
T38.3X6D - Underdosing of insulin and oral hypoglycemic [antidiabetic] drugs, subsequent encounter Billable
T38.4X6 - Underdosing of oral contraceptives Non-Billable
T38.4X6A - Underdosing of oral contraceptives, initial encounter Billable
T38.4X6D - Underdosing of oral contraceptives, subsequent encounter Billable
T38.5X6 - Underdosing of other estrogens and progestogens Non-Billable
T38.5X6A - Underdosing of other estrogens and progestogens, initial encounter Billable
T38.5X6D - Underdosing of other estrogens and progestogens, subsequent encounter Billable
T38.6X6 - Underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified Non-Billable
T38.6X6A - Underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, initial encounter Billable
T38.6X6D - Underdosing of antigonadotrophins, antiestrogens, antiandrogens, not elsewhere classified, subsequent encounter Billable
T38.7X6 - Underdosing of androgens and anabolic congeners Non-Billable
T38.7X6A - Underdosing of androgens and anabolic congeners, initial encounter Billable
T38.7X6D - Underdosing of androgens and anabolic congeners, subsequent encounter Billable
T38.806 - Underdosing of unspecified hormones and synthetic substitutes Non-Billable
T38.806A - Underdosing of unspecified hormones and synthetic substitutes, initial encounter Billable
T38.806D - Underdosing of unspecified hormones and synthetic substitutes, subsequent encounter Billable
T38.816 - Underdosing of anterior pituitary [adenohypophyseal] hormones Non-Billable
T38.816A - Underdosing of anterior pituitary [adenohypophyseal] hormones, initial encounter Billable
T38.816D - Underdosing of anterior pituitary [adenohypophyseal] hormones, subsequent encounter Billable
T38.896 - Underdosing of other hormones and synthetic substitutes Non-Billable
T38.896A - Underdosing of other hormones and synthetic substitutes, initial encounter Billable
T38.896D - Underdosing of other hormones and synthetic substitutes, subsequent encounter Billable
T38.906 - Underdosing of unspecified hormone antagonists Non-Billable
T38.906A - Underdosing of unspecified hormone antagonists, initial encounter Billable
T38.906D - Underdosing of unspecified hormone antagonists, subsequent encounter Billable
T38.996 - Underdosing of other hormone antagonists Non-Billable
T38.996A - Underdosing of other hormone antagonists, initial encounter Billable
T38.996D - Underdosing of other hormone antagonists, subsequent encounter Billable
T40.0X6 - Underdosing of opium Non-Billable
T40.0X6A - Underdosing of opium, initial encounter Billable
T40.0X6D - Underdosing of opium, subsequent encounter Billable
T40.2X6 - Underdosing of other opioids Non-Billable
T40.2X6A - Underdosing of other opioids, initial encounter Billable
T40.2X6D - Underdosing of other opioids, subsequent encounter Billable
T40.3X6 - Underdosing of methadone Non-Billable
T40.3X6A - Underdosing of methadone, initial encounter Billable
T40.3X6D - Underdosing of methadone, subsequent encounter Billable
T40.416 - Underdosing of fentanyl or fentanyl analogs Non-Billable
T40.416A - Underdosing of fentanyl or fentanyl analogs, initial encounter Billable
T40.416D - Underdosing of fentanyl or fentanyl analogs, subsequent encounter Billable
T40.426 - Underdosing of tramadol Non-Billable
T40.426A - Underdosing of tramadol, initial encounter Billable
T40.426D - Underdosing of tramadol, subsequent encounter Billable
T40.496 - Underdosing of other synthetic narcotics Non-Billable
T40.496A - Underdosing of other synthetic narcotics, initial encounter Billable
T40.496D - Underdosing of other synthetic narcotics, subsequent encounter Billable
T40.5X6 - Underdosing of cocaine Non-Billable
T40.5X6A - Underdosing of cocaine, initial encounter Billable
T40.5X6D - Underdosing of cocaine, subsequent encounter Billable
T40.606 - Underdosing of unspecified narcotics Non-Billable
T40.606A - Underdosing of unspecified narcotics, initial encounter Billable
T40.606D - Underdosing of unspecified narcotics, subsequent encounter Billable
T40.696A - Underdosing of other narcotics, initial encounter Billable
T40.696D - Underdosing of other narcotics, subsequent encounter Billable
T40.716 - Underdosing of cannabis Non-Billable
T40.716A - Underdosing of cannabis, initial encounter Billable
T40.716D - Underdosing of cannabis, subsequent encounter Billable
T40.726 - Underdosing of synthetic cannabinoids Non-Billable
T40.726A - Underdosing of synthetic cannabinoids, initial encounter Billable
T40.726D - Underdosing of synthetic cannabinoids, subsequent encounter Billable
T40.906 - Underdosing of unspecified psychodysleptics [hallucinogens] Non-Billable
T40.906A - Underdosing of unspecified psychodysleptics [hallucinogens], initial encounter Billable
T40.906D - Underdosing of unspecified psychodysleptics [hallucinogens], subsequent encounter Billable
T40.996 - Underdosing of other psychodysleptics [hallucinogens] Non-Billable
T40.996A - Underdosing of other psychodysleptics [hallucinogens], initial encounter Billable
T40.996D - Underdosing of other psychodysleptics [hallucinogens], subsequent encounter Billable
T39.016 - Underdosing of aspirin Non-Billable
T39.016A - Underdosing of aspirin, initial encounter Billable
T39.016D - Underdosing of aspirin, subsequent encounter Billable
T39.096 - Underdosing of salicylates Non-Billable
T39.096A - Underdosing of salicylates, initial encounter Billable
T39.096D - Underdosing of salicylates, subsequent encounter Billable
T39.1X6 - Underdosing of 4-Aminophenol derivatives Non-Billable
T39.1X6A - Underdosing of 4-Aminophenol derivatives, initial encounter Billable
T39.1X6D - Underdosing of 4-Aminophenol derivatives, subsequent encounter Billable
T39.2X6 - Underdosing of pyrazolone derivatives Non-Billable
T39.2X6A - Underdosing of pyrazolone derivatives, initial encounter Billable
T39.2X6D - Underdosing of pyrazolone derivatives, subsequent encounter Billable
T39.316 - Underdosing of propionic acid derivatives Non-Billable
T39.316A - Underdosing of propionic acid derivatives, initial encounter Billable
T39.316D - Underdosing of propionic acid derivatives, subsequent encounter Billable
T39.396 - Underdosing of other nonsteroidal anti-inflammatory drugs [NSAID] Non-Billable
T39.396A - Underdosing of other nonsteroidal anti-inflammatory drugs [NSAID], initial encounter Billable
T39.396D - Underdosing of other nonsteroidal anti-inflammatory drugs [NSAID], subsequent encounter Billable
T39.4X6 - Underdosing of antirheumatics, not elsewhere classified Non-Billable
T39.4X6A - Underdosing of antirheumatics, not elsewhere classified, initial encounter Billable
T39.4X6D - Underdosing of antirheumatics, not elsewhere classified, subsequent encounter Billable
T39.8X6 - Underdosing of other nonopioid analgesics and antipyretics, not elsewhere classified Non-Billable
T39.8X6A - Underdosing of other nonopioid analgesics and antipyretics, not elsewhere classified, initial encounter Billable
T39.8X6D - Underdosing of other nonopioid analgesics and antipyretics, not elsewhere classified, subsequent encounter Billable
T39.96 - Underdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic Non-Billable
T39.96XA - Underdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic, initial encounter Billable
T39.96XD - Underdosing of unspecified nonopioid analgesic, antipyretic and antirheumatic, subsequent encounter Billable
T37.0X6 - Underdosing of sulfonamides Non-Billable
T37.0X6A - Underdosing of sulfonamides, initial encounter Billable
T37.0X6D - Underdosing of sulfonamides, subsequent encounter Billable
T37.1X6 - Underdosing of antimycobacterial drugs Non-Billable
T37.1X6A - Underdosing of antimycobacterial drugs, initial encounter Billable
T37.1X6D - Underdosing of antimycobacterial drugs, subsequent encounter Billable
T37.2X6 - Underdosing of antimalarials and drugs acting on other blood protozoa Non-Billable
T37.2X6A - Underdosing of antimalarials and drugs acting on other blood protozoa, initial encounter Billable
T37.2X6D - Underdosing of antimalarials and drugs acting on other blood protozoa, subsequent encounter Billable
T37.3X6 - Underdosing of other antiprotozoal drugs Non-Billable
T37.3X6A - Underdosing of other antiprotozoal drugs, initial encounter Billable
T37.3X6D - Underdosing of other antiprotozoal drugs, subsequent encounter Billable
T37.4X6 - Underdosing of anthelminthics Non-Billable
T37.4X6A - Underdosing of anthelminthics, initial encounter Billable
T37.4X6D - Underdosing of anthelminthics, subsequent encounter Billable
T37.5X6 - Underdosing of antiviral drugs Non-Billable
T37.5X6A - Underdosing of antiviral drugs, initial encounter Billable
T37.5X6D - Underdosing of antiviral drugs, subsequent encounter Billable
T37.8X6 - Underdosing of other specified systemic anti-infectives and antiparasitics Non-Billable
T37.8X6A - Underdosing of other specified systemic anti-infectives and antiparasitics, initial encounter Billable
T37.8X6D - Underdosing of other specified systemic anti-infectives and antiparasitics, subsequent encounter Billable
T37.96 - Underdosing of unspecified systemic anti-infectives and antiparasitics Non-Billable
T37.96XA - Underdosing of unspecified systemic anti-infectives and antiparasitics, initial encounter Billable
T37.96XD - Underdosing of unspecified systemic anti-infectives and antiparasitics, subsequent encounter Billable
T45.0X6 - Underdosing of antiallergic and antiemetic drugs Non-Billable
T45.0X6A - Underdosing of antiallergic and antiemetic drugs, initial encounter Billable
T45.0X6D - Underdosing of antiallergic and antiemetic drugs, subsequent encounter Billable
T45.1X6 - Underdosing of antineoplastic and immunosuppressive drugs Non-Billable
T45.1X6A - Underdosing of antineoplastic and immunosuppressive drugs, initial encounter Billable
T45.1X6D - Underdosing of antineoplastic and immunosuppressive drugs, subsequent encounter Billable
T45.2X6 - Underdosing of vitamins Non-Billable
T45.2X6A - Underdosing of vitamins, initial encounter Billable
T45.2X6D - Underdosing of vitamins, subsequent encounter Billable
T45.3X6 - Underdosing of enzymes Non-Billable
T45.3X6A - Underdosing of enzymes, initial encounter Billable
T45.3X6D - Underdosing of enzymes, subsequent encounter Billable
T45.4X6 - Underdosing of iron and its compounds Non-Billable
T45.4X6A - Underdosing of iron and its compounds, initial encounter Billable
T45.4X6D - Underdosing of iron and its compounds, subsequent encounter Billable
T45.516 - Underdosing of anticoagulants Non-Billable
T45.516A - Underdosing of anticoagulants, initial encounter Billable
T45.516D - Underdosing of anticoagulants, subsequent encounter Billable
T45.526 - Underdosing of antithrombotic drugs Non-Billable
T45.526A - Underdosing of antithrombotic drugs, initial encounter Billable
T45.526D - Underdosing of antithrombotic drugs, subsequent encounter Billable
T45.606 - Underdosing of unspecified fibrinolysis-affecting drugs Non-Billable
T45.606A - Underdosing of unspecified fibrinolysis-affecting drugs, initial encounter Billable
T45.606D - Underdosing of unspecified fibrinolysis-affecting drugs, subsequent encounter Billable
T45.616 - Underdosing of thrombolytic drugs Non-Billable
T45.616A - Underdosing of thrombolytic drugs, initial encounter Billable
T45.616D - Underdosing of thrombolytic drugs, subsequent encounter Billable
T45.626 - Underdosing of hemostatic drugs Non-Billable
T45.626A - Underdosing of hemostatic drugs, initial encounter Billable
T45.626D - Underdosing of hemostatic drugs, subsequent encounter Billable
T45.696 - Underdosing of other fibrinolysis-affecting drugs Non-Billable
T45.696A - Underdosing of other fibrinolysis-affecting drugs, initial encounter Billable
T45.696D - Underdosing of other fibrinolysis-affecting drugs, subsequent encounter Billable
T45.7X6 - Underdosing of anticoagulant antagonist, vitamin K and other coagulants Non-Billable
T45.7X6A - Underdosing of anticoagulant antagonist, vitamin K and other coagulants, initial encounter Billable
T45.7X6D - Underdosing of anticoagulant antagonist, vitamin K and other coagulants, subsequent encounter Billable
T45.8X6 - Underdosing of other primarily systemic and hematological agents Non-Billable
T45.8X6A - Underdosing of other primarily systemic and hematological agents, initial encounter Billable
T45.8X6D - Underdosing of other primarily systemic and hematological agents, subsequent encounter Billable
T45.96 - Underdosing of unspecified primarily systemic and hematological agent Non-Billable
T45.96XA - Underdosing of unspecified primarily systemic and hematological agent, initial encounter Billable
T45.96XD - Underdosing of unspecified primarily systemic and hematological agent, subsequent encounter Billable
T45.AX6 - Underdosing of immune checkpoint inhibitors and immunostimulant drugs Non-Billable
T43.016 - Underdosing of tricyclic antidepressants Non-Billable
T43.016A - Underdosing of tricyclic antidepressants, initial encounter Billable
T43.016D - Underdosing of tricyclic antidepressants, subsequent encounter Billable
T43.026 - Underdosing of tetracyclic antidepressants Non-Billable
T43.026A - Underdosing of tetracyclic antidepressants, initial encounter Billable
T43.026D - Underdosing of tetracyclic antidepressants, subsequent encounter Billable
T43.1X6 - Underdosing of monoamine-oxidase-inhibitor antidepressants Non-Billable
T43.1X6A - Underdosing of monoamine-oxidase-inhibitor antidepressants, initial encounter Billable
T43.1X6D - Underdosing of monoamine-oxidase-inhibitor antidepressants, subsequent encounter Billable
T43.206 - Underdosing of unspecified antidepressants Non-Billable
T43.206A - Underdosing of unspecified antidepressants, initial encounter Billable
T43.206D - Underdosing of unspecified antidepressants, subsequent encounter Billable
T43.216 - Underdosing of selective serotonin and norepinephrine reuptake inhibitors Non-Billable
T43.216A - Underdosing of selective serotonin and norepinephrine reuptake inhibitors, initial encounter Billable
T43.216D - Underdosing of selective serotonin and norepinephrine reuptake inhibitors, subsequent encounter Billable
T43.226 - Underdosing of selective serotonin reuptake inhibitors Non-Billable
T43.226A - Underdosing of selective serotonin reuptake inhibitors, initial encounter Billable
T43.226D - Underdosing of selective serotonin reuptake inhibitors, subsequent encounter Billable
T43.296 - Underdosing of other antidepressants Non-Billable
T43.296A - Underdosing of other antidepressants, initial encounter Billable
T43.296D - Underdosing of other antidepressants, subsequent encounter Billable
T43.3X6 - Underdosing of phenothiazine antipsychotics and neuroleptics Non-Billable
T43.3X6A - Underdosing of phenothiazine antipsychotics and neuroleptics, initial encounter Billable
T43.3X6D - Underdosing of phenothiazine antipsychotics and neuroleptics, subsequent encounter Billable
T43.4X6 - Underdosing of butyrophenone and thiothixene neuroleptics Non-Billable
T43.4X6A - Underdosing of butyrophenone and thiothixene neuroleptics, initial encounter Billable
T43.4X6D - Underdosing of butyrophenone and thiothixene neuroleptics, subsequent encounter Billable
T43.506 - Underdosing of unspecified antipsychotics and neuroleptics Non-Billable
T43.506A - Underdosing of unspecified antipsychotics and neuroleptics, initial encounter Billable
T43.506D - Underdosing of unspecified antipsychotics and neuroleptics, subsequent encounter Billable
T43.596 - Underdosing of other antipsychotics and neuroleptics Non-Billable
T43.596A - Underdosing of other antipsychotics and neuroleptics, initial encounter Billable
T43.596D - Underdosing of other antipsychotics and neuroleptics, subsequent encounter Billable
T43.606 - Underdosing of unspecified psychostimulants Non-Billable
T43.606A - Underdosing of unspecified psychostimulants, initial encounter Billable
T43.606D - Underdosing of unspecified psychostimulants, subsequent encounter Billable
T43.616 - Underdosing of caffeine Non-Billable
T43.616A - Underdosing of caffeine, initial encounter Billable
T43.616D - Underdosing of caffeine, subsequent encounter Billable
T43.626 - Underdosing of amphetamines Non-Billable
T43.626A - Underdosing of amphetamines, initial encounter Billable
T43.626D - Underdosing of amphetamines, subsequent encounter Billable
T43.636 - Underdosing of methylphenidate Non-Billable
T43.636A - Underdosing of methylphenidate, initial encounter Billable
T43.636D - Underdosing of methylphenidate, subsequent encounter Billable
T43.656 - Underdosing of methamphetamines Non-Billable
T43.656A - Underdosing of methamphetamines, initial encounter Billable
T43.656D - Underdosing of methamphetamines, subsequent encounter Billable
T43.696 - Underdosing of other psychostimulants Non-Billable
T43.696A - Underdosing of other psychostimulants, initial encounter Billable
T43.696D - Underdosing of other psychostimulants, subsequent encounter Billable
T43.8X6 - Underdosing of other psychotropic drugs Non-Billable
T43.8X6A - Underdosing of other psychotropic drugs, initial encounter Billable
T43.8X6D - Underdosing of other psychotropic drugs, subsequent encounter Billable
T43.96 - Underdosing of unspecified psychotropic drug Non-Billable
T43.96XA - Underdosing of unspecified psychotropic drug, initial encounter Billable
T43.96XD - Underdosing of unspecified psychotropic drug, subsequent encounter Billable
T36.0X6 - Underdosing of penicillins Non-Billable
T36.0X6A - Underdosing of penicillins, initial encounter Billable
T36.0X6D - Underdosing of penicillins, subsequent encounter Billable
T36.1X6 - Underdosing of cephalosporins and other beta-lactam antibiotics Non-Billable
T36.1X6A - Underdosing of cephalosporins and other beta-lactam antibiotics, initial encounter Billable
T36.1X6D - Underdosing of cephalosporins and other beta-lactam antibiotics, subsequent encounter Billable
T36.2X6 - Underdosing of chloramphenicol group Non-Billable
T36.2X6A - Underdosing of chloramphenicol group, initial encounter Billable
T36.2X6D - Underdosing of chloramphenicol group, subsequent encounter Billable
T36.3X6 - Underdosing of macrolides Non-Billable
T36.3X6A - Underdosing of macrolides, initial encounter Billable
T36.3X6D - Underdosing of macrolides, subsequent encounter Billable
T36.4X6 - Underdosing of tetracyclines Non-Billable
T36.4X6A - Underdosing of tetracyclines, initial encounter Billable
T36.4X6D - Underdosing of tetracyclines, subsequent encounter Billable
T36.5X6 - Underdosing of aminoglycosides Non-Billable
T36.5X6A - Underdosing of aminoglycosides, initial encounter Billable
T36.5X6D - Underdosing of aminoglycosides, subsequent encounter Billable
T36.6X6 - Underdosing of rifampicins Non-Billable
T36.6X6A - Underdosing of rifampicins, initial encounter Billable
T36.6X6D - Underdosing of rifampicins, subsequent encounter Billable
T36.7X6 - Underdosing of antifungal antibiotics, systemically used Non-Billable
T36.7X6A - Underdosing of antifungal antibiotics, systemically used, initial encounter Billable
T36.7X6D - Underdosing of antifungal antibiotics, systemically used, subsequent encounter Billable
T36.8X6 - Underdosing of other systemic antibiotics Non-Billable
T36.8X6A - Underdosing of other systemic antibiotics, initial encounter Billable
T36.8X6D - Underdosing of other systemic antibiotics, subsequent encounter Billable
T36.96 - Underdosing of unspecified systemic antibiotic Non-Billable
T36.96XA - Underdosing of unspecified systemic antibiotic, initial encounter Billable
T36.96XD - Underdosing of unspecified systemic antibiotic, subsequent encounter Billable
T49.0X6 - Underdosing of local antifungal, anti-infective and anti-inflammatory drugs Non-Billable
T49.0X6A - Underdosing of local antifungal, anti-infective and anti-inflammatory drugs, initial encounter Billable
T49.0X6D - Underdosing of local antifungal, anti-infective and anti-inflammatory drugs, subsequent encounter Billable
T49.1X6 - Underdosing of antipruritics Non-Billable
T49.1X6A - Underdosing of antipruritics, initial encounter Billable
T49.1X6D - Underdosing of antipruritics, subsequent encounter Billable
T49.2X6 - Underdosing of local astringents and local detergents Non-Billable
T49.2X6A - Underdosing of local astringents and local detergents, initial encounter Billable
T49.2X6D - Underdosing of local astringents and local detergents, subsequent encounter Billable
T49.3X6 - Underdosing of emollients, demulcents and protectants Non-Billable
T49.3X6A - Underdosing of emollients, demulcents and protectants, initial encounter Billable
T49.3X6D - Underdosing of emollients, demulcents and protectants, subsequent encounter Billable
T49.4X6 - Underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations Non-Billable
T49.4X6A - Underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations, initial encounter Billable
T49.4X6D - Underdosing of keratolytics, keratoplastics, and other hair treatment drugs and preparations, subsequent encounter Billable
T49.5X6 - Underdosing of ophthalmological drugs and preparations Non-Billable
T49.5X6A - Underdosing of ophthalmological drugs and preparations, initial encounter Billable
T49.5X6D - Underdosing of ophthalmological drugs and preparations, subsequent encounter Billable
T49.6X6 - Underdosing of otorhinolaryngological drugs and preparations Non-Billable
T49.6X6A - Underdosing of otorhinolaryngological drugs and preparations, initial encounter Billable
T49.6X6D - Underdosing of otorhinolaryngological drugs and preparations, subsequent encounter Billable
T49.7X6 - Underdosing of dental drugs, topically applied Non-Billable
T49.7X6A - Underdosing of dental drugs, topically applied, initial encounter Billable
T49.7X6D - Underdosing of dental drugs, topically applied, subsequent encounter Billable
T49.8X6 - Underdosing of other topical agents Non-Billable
T49.8X6A - Underdosing of other topical agents, initial encounter Billable
T49.8X6D - Underdosing of other topical agents, subsequent encounter Billable
T49.96 - Underdosing of unspecified topical agent Non-Billable
T49.96XA - Underdosing of unspecified topical agent, initial encounter Billable
T49.96XD - Underdosing of unspecified topical agent, subsequent encounter Billable