T44 ICD-10-CM Code: Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
T44Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
ICD-10-CM diagnosis code · United States clinical modification
Where T44 sits
- 1
Chapter 19
Injury, poisoning and certain other consequences of external causes (S00-T88)
- 2
Section
Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50)
- 3
Category T44
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
- 4
Code T44
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
Codes under T44
T44 is a non-billable category. Choose the child code that best matches the documented diagnosis.
T44.0Poisoning by, adverse effect of and underdosing of anticholinesterase agentsT44.1Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]T44.2Poisoning by, adverse effect of and underdosing of ganglionic blocking drugsT44.3Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolyticsT44.4Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonistsT44.5Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonistsT44.6Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonistsT44.7Poisoning by, adverse effect of and underdosing of beta-adrenoreceptor antagonistsT44.8Poisoning by, adverse effect of and underdosing of centrally-acting and adrenergic-neuron- blocking agentsT44.9Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous systemNotes for this code
Inclusion terms
No inclusion terms are listed for T44.
Code first
No “code first” instruction is listed for T44.
Use additional code
No “use additional code” instruction is listed for T44.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for T44.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for T44.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code T44 mean?
T44 is the FY 2027 U.S. ICD-10-CM code for “Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system.”
Is T44 a billable or specific ICD-10-CM code?
No. T44 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is T44 located in ICD-10-CM?
T44 is listed in Chapter 19, Injury, poisoning and certain other consequences of external causes (S00-T88), within Poisoning by, adverse effects of and underdosing of drugs, medicaments and biological substances (T36-T50) (T36–T50), under category T44, Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system.
What coding notes are listed for T44?
No inclusion terms are listed for T44 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.