T44.996Header code — not billable
Underdosing of other drug primarily affecting the autonomic nervous system
Short description: Underdosing of drug aff the autonomic nervous system
- 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 T44.996?
T44.996 is an ICD-10-CM diagnosis code for Underdosing of other drug primarily affecting the autonomic nervous system.
Is T44.996 a billable code?
No. T44.996 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is T44.996 in?
T44.996 falls under Chapter 19: Injury, poisoning and certain other consequences of external causes.
When did T44.996 become effective?
T44.996 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to T44.996?
T44.996 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.