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ICD-10-CM · FY 2026 APRIL UPDATE

T39.1

Poisoning by, adverse effect of and underdosing of 4-Aminophenol derivatives

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
T39.1XPoisoning by, adverse effect of and underdosing of 4-Aminophenol derivativesCategory
T39.1X1Poisoning by 4-Aminophenol derivatives, accidental (unintentional)Category
T39.1X1APoisoning by 4-Aminophenol derivatives, accidental (unintentional), initial encounterBillable
T39.1X1DPoisoning by 4-Aminophenol derivatives, accidental (unintentional), subsequent encounterBillable
T39.1X1SPoisoning by 4-Aminophenol derivatives, accidental (unintentional), sequelaBillable
T39.1X2Poisoning by 4-Aminophenol derivatives, intentional self-harmCategory
T39.1X2APoisoning by 4-Aminophenol derivatives, intentional self-harm, initial encounterBillable
T39.1X2DPoisoning by 4-Aminophenol derivatives, intentional self-harm, subsequent encounterBillable
T39.1X2SPoisoning by 4-Aminophenol derivatives, intentional self-harm, sequelaBillable
T39.1X3Poisoning by 4-Aminophenol derivatives, assaultCategory
T39.1X3APoisoning by 4-Aminophenol derivatives, assault, initial encounterBillable
T39.1X3DPoisoning by 4-Aminophenol derivatives, assault, subsequent encounterBillable
T39.1X3SPoisoning by 4-Aminophenol derivatives, assault, sequelaBillable
T39.1X4Poisoning by 4-Aminophenol derivatives, undeterminedCategory
T39.1X4APoisoning by 4-Aminophenol derivatives, undetermined, initial encounterBillable
T39.1X4DPoisoning by 4-Aminophenol derivatives, undetermined, subsequent encounterBillable
T39.1X4SPoisoning by 4-Aminophenol derivatives, undetermined, sequelaBillable
T39.1X5Adverse effect of 4-Aminophenol derivativesCategory
T39.1X5AAdverse effect of 4-Aminophenol derivatives, initial encounterBillable
T39.1X5DAdverse effect of 4-Aminophenol derivatives, subsequent encounterBillable
T39.1X5SAdverse effect of 4-Aminophenol derivatives, sequelaBillable
T39.1X6Underdosing of 4-Aminophenol derivativesCategory
T39.1X6AUnderdosing of 4-Aminophenol derivatives, initial encounterBillable
T39.1X6DUnderdosing of 4-Aminophenol derivatives, subsequent encounterBillable
T39.1X6SUnderdosing of 4-Aminophenol derivatives, 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.