T44.991ABillable

Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter

Short description: Poisoning by oth drug aff the autonm nervous sys, acc, init

Chapter
19. Injury, poisoning and certain other consequences of external causes
Category
T44
Effective date
October 1, 2026

Related codes in category T44

T44Drugs primarily affecting the autonomic nervous systemT44.0Anticholinesterase agentsT44.0XAnticholinesterase agentsT44.0X1Poisoning by anticholin agents, accidental (unintentional)T44.0X1APoisoning by anticholin agents, accidental, initYesT44.0X1DPoisoning by anticholin agents, accidental, subsYesT44.0X1SPoisoning by anticholin agents, accidental, sequelaYesT44.0X2Poisoning by anticholinesterase agents, self-harmT44.0X2APoisoning by anticholinesterase agents, self-harm, initYesT44.0X2DPoisoning by anticholinesterase agents, self-harm, subsYesT44.0X2SPoisoning by anticholinesterase agents, self-harm, sequelaYesT44.0X3Poisoning by anticholinesterase agents, assault

Frequently asked questions

What is ICD-10 code T44.991A?

T44.991A is an ICD-10-CM diagnosis code for Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter.

Is T44.991A a billable code?

Yes. T44.991A is billable and specific enough to be used on a claim.

What ICD-10-CM chapter is T44.991A in?

T44.991A falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.

When did T44.991A become effective?

T44.991A has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to T44.991A?

T44.991A belongs to category T44, which includes 12 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.