2024 ICD-10-CM Diagnosis Code T44.1X4D

Poisoning by other parasympathomimetics [cholinergics], undetermined, subsequent encounter

ICD-10-CM Code:
T44.1X4D
ICD-10 Code for:
Poisoning by oth parasympathomimetics, undetermined, subs
Is Billable?
Yes - Valid for Submission
Chronic Condition Indicator: [1]
Not chronic
Code Navigator:

Code Classification

  • Injury, poisoning and certain other consequences of external causes
    (S00–T88)
    • Poisoning by, adverse effect of and underdosing of drugs, medicaments and biological substances
      (T36-T50)
      • Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
        (T44)

T44.1X4D is a billable diagnosis code used to specify a medical diagnosis of poisoning by other parasympathomimetics [cholinergics], undetermined, 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.

T44.1X4D 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 parasympathomimetics [cholinergics] undetermined. 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:

  • Cholinergic crisis

Clinical Classification

Clinical Information

  • Acetylcholine

    a neurotransmitter found at neuromuscular junctions, autonomic ganglia, parasympathetic effector junctions, a subset of sympathetic effector junctions, and at many sites in the central nervous system.
  • Acetylcholine Release Inhibitors

    compounds that block release of the neurotransmitter acetylcholine.
  • Acetylcholinesterase

    an enzyme that catalyzes the hydrolysis of acetylcholine to choline and acetate. in the cns, this enzyme plays a role in the function of peripheral neuromuscular junctions. ec 3.1.1.7.
  • Cholinergic Agents

    any drug used for its actions on cholinergic systems. included here are agonists and antagonists, drugs that affect the life cycle of acetylcholine, and drugs that affect the survival of cholinergic neurons. the term cholinergic agents is sometimes still used in the narrower sense of muscarinic agonists, although most modern texts discourage that usage.
  • Cholinergic Agonists

    drugs that bind to and activate cholinergic receptors.
  • Cholinergic Antagonists

    drugs that bind to but do not activate cholinergic receptors, thereby blocking the actions of acetylcholine or cholinergic agonists.
  • Cholinesterase Inhibitors

    drugs that inhibit cholinesterases. the neurotransmitter acetylcholine is rapidly hydrolyzed, and thereby inactivated, by cholinesterases. when cholinesterases are inhibited, the action of endogenously released acetylcholine at cholinergic synapses is potentiated. cholinesterase inhibitors are widely used clinically for their potentiation of cholinergic inputs to the gastrointestinal tract and urinary bladder, the eye, and skeletal muscles; they are also used for their effects on the heart and the central nervous system.
  • Receptors, Cholinergic

    cell surface proteins that bind acetylcholine with high affinity and trigger intracellular changes influencing the behavior of cells. cholinergic receptors are divided into two major classes, muscarinic and nicotinic, based originally on their affinity for nicotine and muscarine. each group is further subdivided based on pharmacology, location, mode of action, and/or molecular biology.
  • Receptors, Muscarinic

    one of the two major classes of cholinergic receptors. muscarinic receptors were originally defined by their preference for muscarine over nicotine. there are several subtypes (usually m1, m2, m3....) that are characterized by their cellular actions, pharmacology, and molecular biology.
  • Receptors, Nicotinic

    one of the two major classes of cholinergic receptors. nicotinic receptors were originally distinguished by their preference for nicotine over muscarine. they are generally divided into muscle-type and neuronal-type (previously ganglionic) based on pharmacology, and subunit composition of the receptors.
  • Vesicular Acetylcholine Transport Proteins

    vesicular amine transporter proteins that transport the neurotransmitter acetylcholine into small secretory vesicles. proteins of this family contain 12 transmembrane domains and exchange vesicular protons for cytoplasmic acetylcholine.
  • Arecoline

    an alkaloid obtained from the betel nut (areca catechu), fruit of a palm tree. it is an agonist at both muscarinic and nicotinic acetylcholine receptors. it is used in the form of various salts as a ganglionic stimulant, a parasympathomimetic, and a vermifuge, especially in veterinary practice. it has been used as a euphoriant in the pacific islands.
  • Bethanechol

    a slowly hydrolyzing muscarinic agonist with no nicotinic effects. bethanechol is generally used to increase smooth muscle tone, as in the gi tract following abdominal surgery or in urinary retention in the absence of obstruction. it may cause hypotension, heart rate changes, and bronchial spasm.
  • Bethanechol Compounds

    quaternary ammonium compounds that include bethanechol.
  • Carbachol

    a slowly hydrolyzed cholinergic agonist that acts at both muscarinic receptors and nicotinic receptors.
  • Pilocarpine

    a slowly hydrolyzed muscarinic agonist with no nicotinic effects. pilocarpine is used as a miotic and in the treatment of glaucoma.

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 drugs primarily affecting the autonomic nervous system (T44). Use the following options for the aplicable episode of care:

  • A - initial encounter
  • D - subsequent encounter
  • S - sequela

Present on Admission (POA)

T44.1X4D 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 IndicatorReason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert T44.1X4D 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 T44.1X4 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.

Substance Poisoning
Accidental
(unintentional)
Poisoning
Accidental
(self-harm)
Poisoning
Assault
Poisoning
Undetermined
Adverse
effect
Underdosing
AceclidineT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
AcetylcholineT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Acetylcholine
  »chloride
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Acetylcholine
  »derivative
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
ArecolineT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Benzpyrinium bromideT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
BethanecholT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Bethanechol
  »chloride
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
CarbacholT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Carbamylcholine chlorideT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Cholinergic (drug) NECT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Cholinergic (drug) NEC
  »muscle tone enhancer
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Cholinergic (drug) NEC
  »organophosphorus
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Cholinergic (drug) NEC
  »organophosphorus
    »insecticide
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Cholinergic (drug) NEC
  »organophosphorus
    »nerve gas
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Cholinergic (drug) NEC
  »trimethyl ammonium propanediol
T44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
MethacholineT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Parasympathomimetic drug NECT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
PilocarpineT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6
Pilocarpus (jaborandi) extractT44.1X1T44.1X2T44.1X3T44.1X4T44.1X5T44.1X6

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.