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ICD-10-CM · FY 2026 APRIL UPDATE

T44.0

Poisoning by, adverse effect of and underdosing of anticholinesterase agents

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
T44.0XPoisoning by, adverse effect of and underdosing of anticholinesterase agentsCategory
T44.0X1Poisoning by anticholinesterase agents, accidental (unintentional)Category
T44.0X1APoisoning by anticholinesterase agents, accidental (unintentional), initial encounterBillable
T44.0X1DPoisoning by anticholinesterase agents, accidental (unintentional), subsequent encounterBillable
T44.0X1SPoisoning by anticholinesterase agents, accidental (unintentional), sequelaBillable
T44.0X2Poisoning by anticholinesterase agents, intentional self-harmCategory
T44.0X2APoisoning by anticholinesterase agents, intentional self-harm, initial encounterBillable
T44.0X2DPoisoning by anticholinesterase agents, intentional self-harm, subsequent encounterBillable
T44.0X2SPoisoning by anticholinesterase agents, intentional self-harm, sequelaBillable
T44.0X3Poisoning by anticholinesterase agents, assaultCategory
T44.0X3APoisoning by anticholinesterase agents, assault, initial encounterBillable
T44.0X3DPoisoning by anticholinesterase agents, assault, subsequent encounterBillable
T44.0X3SPoisoning by anticholinesterase agents, assault, sequelaBillable
T44.0X4Poisoning by anticholinesterase agents, undeterminedCategory
T44.0X4APoisoning by anticholinesterase agents, undetermined, initial encounterBillable
T44.0X4DPoisoning by anticholinesterase agents, undetermined, subsequent encounterBillable
T44.0X4SPoisoning by anticholinesterase agents, undetermined, sequelaBillable
T44.0X5Adverse effect of anticholinesterase agentsCategory
T44.0X5AAdverse effect of anticholinesterase agents, initial encounterBillable
T44.0X5DAdverse effect of anticholinesterase agents, subsequent encounterBillable
T44.0X5SAdverse effect of anticholinesterase agents, sequelaBillable
T44.0X6Underdosing of anticholinesterase agentsCategory
T44.0X6AUnderdosing of anticholinesterase agents, initial encounterBillable
T44.0X6DUnderdosing of anticholinesterase agents, subsequent encounterBillable
T44.0X6SUnderdosing of anticholinesterase agents, 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.

Open official CMS files

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