2024 ICD-10-CM Diagnosis Code T46.5X2D
Poisoning by other antihypertensive drugs, intentional self-harm, subsequent encounter
- ICD-10-CM Code:
- T46.5X2D
- ICD-10 Code for:
- Poisoning by oth antihypertensive drugs, self-harm, subs
- Is Billable?
- Yes - Valid for Submission
- Chronic Condition Indicator: [1]
- Not chronic
- Code Navigator:
- Code Information
- Approximate Synonyms
- Clinical Classification
- Clinical Information
- Coding Guidelines
- Tabular List of Diseases and Injuries
- Diagnostic Related Groups Mapping
- Present on Admission (POA)
- Convert to ICD-9 Code
- Table of Drugs and Chemicals
- Patient Education
- Other Codes Used Similar Conditions
- Code History
T46.5X2D is a billable diagnosis code used to specify a medical diagnosis of poisoning by other antihypertensive drugs, intentional self-harm, subsequent encounter. The code is valid during the current fiscal year for the submission of HIPAA-covered transactions from October 01, 2023 through September 30, 2024. The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.
T46.5X2D is a subsequent encounter code, includes a 7th character and should be used after the patient has completed active treatment for a condition like poisoning by other antihypertensive drugs intentional self-harm. According to ICD-10-CM Guidelines a "subsequent encounter" occurs when the patient is receiving routine care for the condition during the healing or recovery phase of treatment. Subsequent diagnosis codes are appropriate during the recovery phase, no matter how many times the patient has seen the provider for this condition. If the provider needs to adjust the patient's care plan due to a setback or other complication, the encounter becomes active again.
Approximate Synonyms
The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:
- Adrenergic neurone blocking drug overdose
- Adrenergic neurone blocking drug poisoning
- Adrenergic neurone blocking drug poisoning
- Alpha-adrenoceptor agonist overdose
- Central alpha-2 adrenergic receptor agonist overdose
- Central alpha-2 adrenergic receptor agonist poisoning
- Central alpha-2 adrenergic receptor agonist poisoning
- Clonidine overdose
- Diazoxide overdose
- Guanethidine overdose
- Hydralazine overdose
- Hydralazine poisoning
- Hydralazine poisoning
- Intentional antihypertensive overdose
- Intentional clonidine overdose
- Intentional clonidine poisoning
- Intentional diazoxide overdose
- Intentional diazoxide poisoning
- Intentional guanethidine overdose
- Intentional guanethidine poisoning
- Intentional hydralazine overdose
- Intentional hydralazine poisoning
- Poisoning by clonidine
- Poisoning by clonidine
- Poisoning by diazoxide
- Poisoning by diazoxide
- Poisoning by guanethidine
- Poisoning by guanethidine
Clinical Classification
Clinical Category | CCSR Category Code | Inpatient Default CCSR | Outpatient Default CCSR |
---|---|---|---|
Poisoning by drugs, subsequent encounter | INJ059 | N - Not default inpatient assignment for principal diagnosis or first-listed diagnosis. | N - Not default outpatient assignment for principal diagnosis or first-listed diagnosis. |
Suicide attempt/intentional self-harm; subsequent encounter | MBD027 | Y - Yes, default inpatient assignment for principal diagnosis or first-listed diagnosis. | Y - Yes, default outpatient assignment for principal diagnosis or first-listed diagnosis. |
Clinical Information
Bethanidine
a guanidinium antihypertensive agent that acts by blocking adrenergic transmission. the precise mode of action is not clear.Clonidine
an imidazoline sympatholytic agent that stimulates alpha-2 adrenergic receptors and central imidazoline receptors. it is commonly used in the management of hypertension.Diazoxide
a benzothiadiazine derivative that is a peripheral vasodilator used for hypertensive emergencies. it lacks diuretic effect, apparently because it lacks a sulfonamide group.Dihydralazine
1,4-dihydrazinophthalazine. an antihypertensive agent with actions and uses similar to those of hydralazine. (from martindale, the extra pharmacopoeia, 30th ed, p354)Dihydroergotamine
a 9,10alpha-dihydro derivative of ergotamine. it is used as a vasoconstrictor, specifically for the therapy of migraine disorders.Ergotamine
a vasoconstrictor found in ergot of central europe. it is a serotonin agonist that has been used as an oxytocic agent and in the treatment of migraine disorders.Ergotamines
a series of structurally-related alkaloids containing the ergotaman backbone structure.Guanabenz
an alpha-2 selective adrenergic agonist used as an antihypertensive agent.Guanethidine
an antihypertensive agent that acts by inhibiting selectively transmission in post-ganglionic adrenergic nerves. it is believed to act mainly by preventing the release of norepinephrine at nerve endings and causes depletion of norepinephrine in peripheral sympathetic nerve terminals as well as in tissues.Guanfacine
a centrally acting antihypertensive agent with specificity towards adrenergic alpha-2 receptors.Hydralazine
a direct-acting vasodilator that is used as an antihypertensive agent.Indapamide
a benzamide-sulfonamide-indole derived diuretic that functions by inhibiting sodium chloride symporters.Carbidopa
an inhibitor of dopa decarboxylase that prevents conversion of levodopa to dopamine. it is used in parkinson disease to reduce peripheral adverse effects of levodopa. it has no anti-parkinson activity by itself.Deoxyepinephrine
sympathomimetic, vasoconstrictor agent.Methyldopa
an alpha-2 adrenergic agonist that has both central and peripheral nervous system effects. its primary clinical use is as an antihypertensive agent.Methysergide
an ergot derivative that is a congener of lysergic acid diethylamide. it antagonizes the effects of serotonin in blood vessels and gastrointestinal smooth muscle, but has few of the properties of other ergot alkaloids. methysergide is used prophylactically in migraine and other vascular headaches and to antagonize serotonin in the carcinoid syndrome.Nitroprusside
a powerful vasodilator used in emergencies to lower blood pressure or to improve cardiac function. it is also an indicator for free sulfhydryl groups in proteins.Pargyline
a monoamine oxidase inhibitor with antihypertensive properties.Pinacidil
a guanidine that opens potassium channels producing direct peripheral vasodilatation of the arterioles. it reduces blood pressure and peripheral resistance and produces fluid retention. (martindale the extra pharmacopoeia, 31st ed)Saralasin
an octapeptide analog of angiotensin ii (bovine) with amino acids 1 and 8 replaced with sarcosine and alanine, respectively. it is a highly specific competitive inhibitor of angiotensin ii that is used in the diagnosis of hypertension.Teprotide
a synthetic nonapeptide (pyr-trp-pro-arg-pro-gln-ile-pro-pro) which is identical to the peptide from the venom of the snake, bothrops jararaca. it inhibits kininase ii and angiotensin i and has been proposed as an antihypertensive agent.Todralazine
an antihypertensive agent with both central and peripheral action; it has some central nervous system depressant effects.Veratrine
a voltage-gated sodium channel activator.
Coding Guidelines
When coding a poisoning or reaction to the improper use of a medication (e.g., overdose, wrong substance given or taken in error, wrong route of administration), first assign the appropriate code from categories T36-T50. The poisoning codes have an associated intent as their 5th or 6th character (accidental, intentional self-harm, assault and undetermined. If the intent of the poisoning is unknown or unspecified, code the intent as accidental intent. The undetermined intent is only for use if the documentation in the record specifies that the intent cannot be determined. Use additional code(s) for all manifestations of poisonings.
The appropriate 7th character is to be added to each code from block Poisoning by, adverse effect of and underdosing of agents primarily affecting the cardiovascular system (T46). Use the following options for the aplicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Present on Admission (POA)
T46.5X2D is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here.
CMS POA Indicator Options and Definitions
POA Indicator | Reason for Code | CMS will pay the CC/MCC DRG? |
---|---|---|
Y | Diagnosis was present at time of inpatient admission. | YES |
N | Diagnosis was not present at time of inpatient admission. | NO |
U | Documentation insufficient to determine if the condition was present at the time of inpatient admission. | NO |
W | Clinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission. | YES |
1 | Unreported/Not used - Exempt from POA reporting. | NO |
Convert T46.5X2D to ICD-9-CM
- ICD-9-CM Code: V58.89 - Other specfied aftercare
Approximate Flag - The approximate mapping means there is not an exact match between the ICD-10 and ICD-9 codes and the mapped code is not a precise representation of the original code.
Table of Drugs and Chemicals
The parent code T46.5X2 of the current diagnosis code is referenced in the Table of Drugs and Chemicals, this table contains a classification of drugs, industrial solvents, corrosive gases, noxious plants, pesticides, and other toxic agents.
According to ICD-10-CM coding guidelines it is advised to do not code directly from the Table of Drugs and Chemicals, instead always refer back to the Tabular List when doing the initial coding. Each substance in the table is assigned a code according to the poisoning classification and external causes of adverse effects. It is important to use as many codes as necessary to specify all reported drugs, medicinal or chemical substances. If the same diagnosis code describes the causative agent for more than one adverse reaction, poisoning, toxic effect or underdosing, utilize the code only once.
Patient Education
Poisoning
A poison is any substance that is harmful to your body. You might swallow it, inhale it, inject it, or absorb it through your skin. Any substance can be poisonous if too much is taken. Poisons can include:
- Prescription or over-the-counter medicines taken in doses that are too high
- Overdoses of illegal drugs
- Carbon monoxide from gas appliances
- Household products, such as laundry powder or furniture polish
- Pesticides
- Indoor or outdoor plants
- Metals such as lead and mercury
The effects of poisoning range from short-term illness to brain damage, coma, and death. To prevent poisoning it is important to use and store products exactly as their labels say. Keep dangerous products where children can't get to them. Treatment for poisoning depends on the type of poison. If you suspect someone has been poisoned, call your local poison control center at 1-800-222-1222 right away.
[Learn More in MedlinePlus]
Code History
- FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
- FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
- FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
- FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
- FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
- FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
- FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
- FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
- FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.
Footnotes
[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.