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ICD-10-CM · FY 2026 APRIL UPDATE

T44.1

Poisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]

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

CODEDESCRIPTIONTYPE
T44.1XPoisoning by, adverse effect of and underdosing of other parasympathomimetics [cholinergics]Category
T44.1X1Poisoning by other parasympathomimetics [cholinergics], accidental (unintentional)Category
T44.1X1APoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), initial encounterBillable
T44.1X1DPoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), subsequent encounterBillable
T44.1X1SPoisoning by other parasympathomimetics [cholinergics], accidental (unintentional), sequelaBillable
T44.1X2Poisoning by other parasympathomimetics [cholinergics], intentional self-harmCategory
T44.1X2APoisoning by other parasympathomimetics [cholinergics], intentional self-harm, initial encounterBillable
T44.1X2DPoisoning by other parasympathomimetics [cholinergics], intentional self-harm, subsequent encounterBillable
T44.1X2SPoisoning by other parasympathomimetics [cholinergics], intentional self-harm, sequelaBillable
T44.1X3Poisoning by other parasympathomimetics [cholinergics], assaultCategory
T44.1X3APoisoning by other parasympathomimetics [cholinergics], assault, initial encounterBillable
T44.1X3DPoisoning by other parasympathomimetics [cholinergics], assault, subsequent encounterBillable
T44.1X3SPoisoning by other parasympathomimetics [cholinergics], assault, sequelaBillable
T44.1X4Poisoning by other parasympathomimetics [cholinergics], undeterminedCategory
T44.1X4APoisoning by other parasympathomimetics [cholinergics], undetermined, initial encounterBillable
T44.1X4DPoisoning by other parasympathomimetics [cholinergics], undetermined, subsequent encounterBillable
T44.1X4SPoisoning by other parasympathomimetics [cholinergics], undetermined, sequelaBillable
T44.1X5Adverse effect of other parasympathomimetics [cholinergics]Category
T44.1X5AAdverse effect of other parasympathomimetics [cholinergics], initial encounterBillable
T44.1X5DAdverse effect of other parasympathomimetics [cholinergics], subsequent encounterBillable
T44.1X5SAdverse effect of other parasympathomimetics [cholinergics], sequelaBillable
T44.1X6Underdosing of other parasympathomimetics [cholinergics]Category
T44.1X6AUnderdosing of other parasympathomimetics [cholinergics], initial encounterBillable
T44.1X6DUnderdosing of other parasympathomimetics [cholinergics], subsequent encounterBillable
T44.1X6SUnderdosing of other parasympathomimetics [cholinergics], sequelaBillable

Use the complete reference

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.