T44.991D
✓ Billable
Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
T44.991D
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Injury, Poisoning and Certain Other Consequences of External Causes
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Frequently asked questions
What is ICD-10 code T44.991D?
ICD-10-CM code T44.991D represents Poisoning by other drug primarily affecting the autonomic nervous system, accidental (unintentional), subsequent encounter. It is a billable diagnosis code in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T44.991D billable?
Yes. T44.991D is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is T44.991D in?
T44.991D belongs to the Injury, Poisoning and Certain Other Consequences of External Causes chapter (S00–T88) of ICD-10-CM.
Related codes in the T44 category
T44
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
Non-billable
T44.0
Poisoning by, adverse effect of and underdosing of anticholinesterase agents
Non-billable
T44.1
Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]
Non-billable
T44.2
Poisoning by, adverse effect of and underdosing of ganglionic blocking drugs
Non-billable
T44.3
Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics
Non-billable
T44.4
Poisoning by, adverse effect of and underdosing of predominantly alpha-adrenoreceptor agonists
Non-billable
T44.5
Poisoning by, adverse effect of and underdosing of predominantly beta-adrenoreceptor agonists
Non-billable
T44.6
Poisoning by, adverse effect of and underdosing of alpha-adrenoreceptor antagonists
Non-billable
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