T44
⚠ Non-billable
Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system
ICD-10-CM · FY2026 · Injury, Poisoning and Certain Other Consequences of External Causes
Code
T44
System
ICD-10-CM
Billable
No — use specific code
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?
ICD-10-CM code T44 represents Poisoning by, adverse effect of and underdosing of drugs primarily affecting the autonomic nervous system. It is a non-billable header code requiring a more specific subcategory in the Injury, Poisoning and Certain Other Consequences of External Causes chapter, effective October 1, 2025 – September 30, 2026.
Is T44 billable?
No. T44 is a non-billable header. Select a more specific subcategory for claims submission.
What chapter is T44 in?
T44 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
T44.0
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
T44.0X
Poisoning by, adverse effect of and underdosing of anticholinesterase agents
Non-billable
T44.1X
Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]
Non-billable
T44.0X1
Poisoning by anticholinesterase agents, accidental (unintentional)
Non-billable
T44.0X2
Poisoning by anticholinesterase agents, intentional self-harm
Non-billable
T44.0X3
Poisoning by anticholinesterase agents, assault
Non-billable
T44.0X4
Poisoning by anticholinesterase agents, undetermined
Non-billable
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