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ICD-10-CM · FY 2026 APRIL UPDATE

T49.8X

Poisoning by, adverse effect of and underdosing of other topical 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
T49.8X1Poisoning by other topical agents, accidental (unintentional)Category
T49.8X1APoisoning by other topical agents, accidental (unintentional), initial encounterBillable
T49.8X1DPoisoning by other topical agents, accidental (unintentional), subsequent encounterBillable
T49.8X1SPoisoning by other topical agents, accidental (unintentional), sequelaBillable
T49.8X2Poisoning by other topical agents, intentional self-harmCategory
T49.8X2APoisoning by other topical agents, intentional self-harm, initial encounterBillable
T49.8X2DPoisoning by other topical agents, intentional self-harm, subsequent encounterBillable
T49.8X2SPoisoning by other topical agents, intentional self-harm, sequelaBillable
T49.8X3Poisoning by other topical agents, assaultCategory
T49.8X3APoisoning by other topical agents, assault, initial encounterBillable
T49.8X3DPoisoning by other topical agents, assault, subsequent encounterBillable
T49.8X3SPoisoning by other topical agents, assault, sequelaBillable
T49.8X4Poisoning by other topical agents, undeterminedCategory
T49.8X4APoisoning by other topical agents, undetermined, initial encounterBillable
T49.8X4DPoisoning by other topical agents, undetermined, subsequent encounterBillable
T49.8X4SPoisoning by other topical agents, undetermined, sequelaBillable
T49.8X5Adverse effect of other topical agentsCategory
T49.8X5AAdverse effect of other topical agents, initial encounterBillable
T49.8X5DAdverse effect of other topical agents, subsequent encounterBillable
T49.8X5SAdverse effect of other topical agents, sequelaBillable
T49.8X6Underdosing of other topical agentsCategory
T49.8X6AUnderdosing of other topical agents, initial encounterBillable
T49.8X6DUnderdosing of other topical agents, subsequent encounterBillable
T49.8X6SUnderdosing of other topical 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.