ICD-10-CM · FY 2026 APRIL UPDATE

T44.3

Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027

SourceCMS ICD-10-CM order file

ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODE	DESCRIPTION	TYPE
T44.3X	Poisoning by, adverse effect of and underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics	Category
T44.3X1	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional)	Category
T44.3X1A	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), initial encounter	Billable
T44.3X1D	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), subsequent encounter	Billable
T44.3X1S	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, accidental (unintentional), sequela	Billable
T44.3X2	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm	Category
T44.3X2A	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, initial encounter	Billable
T44.3X2D	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, subsequent encounter	Billable
T44.3X2S	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, intentional self-harm, sequela	Billable
T44.3X3	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault	Category
T44.3X3A	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, initial encounter	Billable
T44.3X3D	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, subsequent encounter	Billable
T44.3X3S	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, assault, sequela	Billable
T44.3X4	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined	Category
T44.3X4A	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, initial encounter	Billable
T44.3X4D	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, subsequent encounter	Billable
T44.3X4S	Poisoning by other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, undetermined, sequela	Billable
T44.3X5	Adverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics	Category
T44.3X5A	Adverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, initial encounter	Billable
T44.3X5D	Adverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, subsequent encounter	Billable
T44.3X5S	Adverse effect of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, sequela	Billable
T44.3X6	Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics	Category
T44.3X6A	Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, initial encounter	Billable
T44.3X6D	Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, subsequent encounter	Billable
T44.3X6S	Underdosing of other parasympatholytics [anticholinergics and antimuscarinics] and spasmolytics, sequela	Billable

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This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

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ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.