ICD-10-CM T44: Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system

ICD-10-CM Diagnosis Code (2025)

Official Description for T44

Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system

Coding Notes & Guidelines for T44

Excludes1: Not Coded Here

poisoning by, adverse effect of and underdosing of beta-adrenoreceptor agonists used in asthma therapy (T48.6-)

Excludes1: Not Coded Here

poisoning by, adverse effect of and underdosing of ergot alkaloids (T48.0)

Excludes2: Not Included Here
  • poisoning by, adverse effect of and underdosing of clonidine (T46.5)
  • poisoning by, adverse effect of and underdosing of guanethidine (T46.5)
Inclusion Terms

Poisoning by anticholinesterase agents NOS

Inclusion Terms

Poisoning by other parasympathomimetics [cholinergics] NOS

Inclusion Terms

Poisoning by ganglionic blocking drugs NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of papaverine

Inclusion Terms

Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of metaraminol

Inclusion Terms

Poisoning by predominantly alpha-adrenoreceptor agonists NOS

Inclusion Terms

Poisoning by predominantly beta-adrenoreceptor agonists NOS

Inclusion Terms

Poisoning by alpha-adrenoreceptor antagonists NOS

Inclusion Terms

Poisoning by beta-adrenoreceptor antagonists NOS

Inclusion Terms

Poisoning by centrally-acting and adrenergic-neuron-blocking agents NOS

Inclusion Terms

Poisoning by, adverse effect of and underdosing of drug stimulating both alpha and beta-adrenoreceptors

Inclusion Terms

Poisoning by unspecified drugs primarily affecting the autonomic nervous system NOS

Inclusion Terms

Poisoning by other drugs primarily affecting the autonomic nervous system NOS

7th Character Guidance

The appropriate 7th character is to be added to each code from category T44

7th Character Definitions
  • A: initial encounter
  • D: subsequent encounter
  • S: sequela

Child Codes (More Specific Codes for T44):

T44.0 - Poisoning by, adverse effect of and underdosing of anticholinesterase agents T44.0X - Poisoning by, adverse effect of and underdosing of anticholinesterase agents T44.0X1 - Poisoning by anticholinesterase agents, accidental (unintentional) T44.0X2 - Poisoning by anticholinesterase agents, intentional self-harm T44.0X3 - Poisoning by anticholinesterase agents, assault T44.0X4 - Poisoning by anticholinesterase agents, undetermined T44.0X5 - Adverse effect of anticholinesterase agents T44.0X6 - Underdosing of anticholinesterase agents T44.1 - Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics] T44.1X - Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics] T44.1X1 - Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional) T44.1X2 - Poisoning by other parasympathomimetics [cholinergics], intentional self-harm T44.1X3 - Poisoning by other parasympathomimetics [cholinergics], assault T44.1X4 - Poisoning by other parasympathomimetics [cholinergics], undetermined T44.1X5 - Adverse effect of other parasympathomimetics [cholinergics] T44.1X6 - Underdosing of other parasympathomimetics [cholinergics] T44.2 - Poisoning by, adverse effect of and underdosing of ganglionic blocking drugs T44.2X - Poisoning by, adverse effect of and underdosing of ganglionic blocking drugs T44.2X1 - Poisoning by ganglionic blocking drugs, accidental (unintentional) T44.2X2 - Poisoning by ganglionic blocking drugs, intentional self-harm T44.2X3 - Poisoning by ganglionic blocking drugs, assault T44.2X4 - Poisoning by ganglionic blocking drugs, undetermined T44.2X5 - Adverse effect of ganglionic blocking drugs T44.2X6 - Underdosing of ganglionic blocking drugs T44.3 - Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics T44.3X - Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics T44.3X1 - Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional) T44.3X2 - Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm T44.3X3 - Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault T44.3X4 - Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined T44.3X5 - Adverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics T44.3X6 - Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics T44.4 - Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonists T44.4X - Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonists T44.4X1 - Poisoning by predominantly alpha-adrenoreceptor agonists, accidental (unintentional) T44.4X2 - Poisoning by predominantly alpha-adrenoreceptor agonists, intentional self-harm T44.4X3 - Poisoning by predominantly alpha-adrenoreceptor agonists, assault T44.4X4 - Poisoning by predominantly alpha-adrenoreceptor agonists, undetermined T44.4X5 - Adverse effect of predominantly alpha-adrenoreceptor agonists T44.4X6 - Underdosing of predominantly alpha-adrenoreceptor agonists T44.5 - Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonists T44.5X - Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonists T44.5X1 - Poisoning by predominantly beta-adrenoreceptor agonists, accidental (unintentional) T44.5X2 - Poisoning by predominantly beta-adrenoreceptor agonists, intentional self-harm T44.5X3 - Poisoning by predominantly beta-adrenoreceptor agonists, assault T44.5X4 - Poisoning by predominantly beta-adrenoreceptor agonists, undetermined T44.5X5 - Adverse effect of predominantly beta-adrenoreceptor agonists T44.5X6 - Underdosing of predominantly beta-adrenoreceptor agonists T44.6 - Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists T44.6X - Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists T44.6X1 - Poisoning by alpha-adrenoreceptor antagonists, accidental (unintentional) T44.6X2 - Poisoning by alpha-adrenoreceptor antagonists, intentional self-harm T44.6X3 - Poisoning by alpha-adrenoreceptor antagonists, assault T44.6X4 - Poisoning by alpha-adrenoreceptor antagonists, undetermined T44.6X5 - Adverse effect of alpha-adrenoreceptor antagonists T44.6X6 - Underdosing of alpha-adrenoreceptor antagonists T44.7 - Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists T44.7X - Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonists T44.7X1 - Poisoning by beta-adrenoreceptor antagonists, accidental (unintentional) T44.7X2 - Poisoning by beta-adrenoreceptor antagonists, intentional self-harm T44.7X3 - Poisoning by beta-adrenoreceptor antagonists, assault T44.7X4 - Poisoning by beta-adrenoreceptor antagonists, undetermined T44.7X5 - Adverse effect of beta-adrenoreceptor antagonists T44.7X6 - Underdosing of beta-adrenoreceptor antagonists T44.8 - Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agents T44.8X - Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic- neuron-blocking agents T44.8X1 - Poisoning by centrally-acting and adrenergic-neuron-blocking agents, accidental (unintentional) T44.8X2 - Poisoning by centrally-acting and adrenergic-neuron-blocking agents, intentional self-harm T44.8X3 - Poisoning by centrally-acting and adrenergic-neuron-blocking agents, assault T44.8X4 - Poisoning by centrally-acting and adrenergic-neuron-blocking agents, undetermined T44.8X5 - Adverse effect of centrally-acting and adrenergic-neuron-blocking agents T44.8X6 - Underdosing of centrally-acting and adrenergic-neuron-blocking agents T44.9 - Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous system T44.90 - Poisoning by, adverse effect of and underdosing of unspecified drugs primarily affecting the autonomic nervous system T44.901 - Poisoning by unspecified drugs primarily affecting the autonomic nervous system, accidental (unintentional) T44.902 - Poisoning by unspecified drugs primarily affecting the autonomic nervous system, intentional self-harm T44.903 - Poisoning by unspecified drugs primarily affecting the autonomic nervous system, assault T44.904 - Poisoning by unspecified drugs primarily affecting the autonomic nervous system, undetermined T44.905 - Adverse effect of unspecified drugs primarily affecting the autonomic nervous system T44.906 - Underdosing of unspecified drugs primarily affecting the autonomic nervous system T44.99 - Poisoning by, adverse effect of and underdosing of other drugs primarily affecting the autonomic nervous system T44.991 - Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional) T44.992 - Poisoning by other drug primarily affecting the autonomic nervous system, intentional self-harm T44.993 - Poisoning by other drug primarily affecting the autonomic nervous system, assault T44.994 - Poisoning by other drug primarily affecting the autonomic nervous system, undetermined T44.995 - Adverse effect of other drug primarily affecting the autonomic nervous system T44.996 - Underdosing of other drug primarily affecting the autonomic nervous system

About ICD-10-CM Code T44 (Poisoning by)

ICD-10-CM code T44 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM T44 became effective on October 1, 2024.

This page provides detailed information about T44 - Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Poisoning by related to adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system.