All ICD10 Codes

T44

Non-Billable
ChapterS00–T88
Rankcategory
Official Description

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

Use a more specific code (0 billable, 10 non-billable)
T44.0Poisoning by, adverse effect of and underdosing of anticholinesterase agentshas subcodesT44.1Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]has subcodesT44.2Poisoning by, adverse effect of and underdosing of ganglionic blocking drugshas subcodesT44.3Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolyticshas subcodesT44.4Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonistshas subcodesT44.5Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonistshas subcodesT44.6Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonistshas subcodesT44.7Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonistshas subcodesT44.8Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agentshas subcodesT44.9Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous systemhas subcodes
Metadata & Insights
  • •Non-billable category (requires more specific sub-code).
  • •Chapter 19: Injury, Poisoning and Certain Other Consequences of External Causes (S00-T88).

CH19 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
Use Additional Code
  • code to identify any retained foreign body, if applicable (Z18.-)

T36-T50 Parent Instructions

Includes
  • adverse effect of correct substance properly administered
  • poisoning by overdose of substance
  • poisoning by wrong substance given or taken in error
  • underdosing by (inadvertently) (deliberately) taking less substance than prescribed or instructed
Excludes1(Not coded here. Use a different code.)
  • toxic reaction to local anesthesia in pregnancy (O29.3-)
Excludes2(Not included here. Code separately if applicable.)
  • abuse and dependence of psychoactive substances (F10-F19)
  • abuse of non-dependence-producing substances (F55.-)
  • immunodeficiency due to drugs (D84.821)
  • drug reaction and poisoning affecting newborn (P00-P96)
  • pathological drug intoxication (inebriation) (F10-F19)
Code First
  • , for adverse effects, the nature of the adverse effect, such as:
  • adverse effect NOS (T88.7)
  • aspirin gastritis (K29.-)
  • blood disorders (D56-D76)
  • contact dermatitis (L23-L25)
  • dermatitis due to substances taken internally (L27.-)
  • nephropathy (N14.0-N14.2)
Use Additional Code
  • code(s) to specify:
  • manifestations of poisoning
  • underdosing or failure in dosage during medical and surgical care (Y63.6, Y63.8-Y63.9)
  • underdosing of medication regimen (Z91.12-, Z91.13-)

Clinical Hierarchy

BillableHas subcodes
CH19Injury, poisoning and certain other consequences of external causes (S00-T88)
T36-T50Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
T44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous systemNot billable
T44.0Poisoning by, adverse effect of and underdosing of anticholinesterase agentsSubcodes
T44.1Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]Subcodes
T44.2Poisoning by, adverse effect of and underdosing of ganglionic blocking drugsSubcodes
T44.3Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolyticsSubcodes
T44.4Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonistsSubcodes
T44.5Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonistsSubcodes
T44.6Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonistsSubcodes
T44.7Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonistsSubcodes
T44.8Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agentsSubcodes
T44.9Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous systemSubcodes

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to T44:

blockT36-T50
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
View context instructions
chapterCH19
Injury, poisoning and certain other consequences of external causes (S00-T88)
View context instructions

MS-DRG Classification

2026

No direct MS-DRG triggers identified.

Cross Reference

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