T44.991
Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)
- Release
- FY 2027
- Effective
Hierarchy
Where T44.991 sits in the official hierarchy. Each level is the code it is classified under.
- T44 Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
- T44.9 Poisoning by, adverse effect of and underdosing of other and unspecified drugs primarily affecting the autonomic nervous system
- T44.99 Parent Poisoning by, adverse effect of and underdosing of other drugs primarily affecting the autonomic nervous system
- T44.991 This code Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)
Official Coding Notes
Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.
Inclusion Terms
Poisoning by other drugs primarily affecting the autonomic nervous system NOS
7th Character
The appropriate 7th character is to be added to each code from category T44
Inherited from T44 — Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
7th Character
A - initial encounter
Inherited from T44 — Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
7th Character
D - subsequent encounter
Inherited from T44 — Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
7th Character
S - sequela
Inherited from T44 — Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
More Specific Codes
3 codes under T44.991
- T44.991A Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), initial encounter Billable
- T44.991D Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter Billable
- T44.991S Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), sequela Billable
Version History
How T44.991 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentPoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)
-
FY 2026 Effective
UnchangedPoisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional)
Related Codes
Other codes under T44.99
- 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
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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