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ICD-10-CM · FY 2026 APRIL UPDATE

T49.5X

Poisoning by, adverse effect of and underdosing of ophthalmological drugs and preparations

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
T49.5X1Poisoning by ophthalmological drugs and preparations, accidental (unintentional)Category
T49.5X1APoisoning by ophthalmological drugs and preparations, accidental (unintentional), initial encounterBillable
T49.5X1DPoisoning by ophthalmological drugs and preparations, accidental (unintentional), subsequent encounterBillable
T49.5X1SPoisoning by ophthalmological drugs and preparations, accidental (unintentional), sequelaBillable
T49.5X2Poisoning by ophthalmological drugs and preparations, intentional self-harmCategory
T49.5X2APoisoning by ophthalmological drugs and preparations, intentional self-harm, initial encounterBillable
T49.5X2DPoisoning by ophthalmological drugs and preparations, intentional self-harm, subsequent encounterBillable
T49.5X2SPoisoning by ophthalmological drugs and preparations, intentional self-harm, sequelaBillable
T49.5X3Poisoning by ophthalmological drugs and preparations, assaultCategory
T49.5X3APoisoning by ophthalmological drugs and preparations, assault, initial encounterBillable
T49.5X3DPoisoning by ophthalmological drugs and preparations, assault, subsequent encounterBillable
T49.5X3SPoisoning by ophthalmological drugs and preparations, assault, sequelaBillable
T49.5X4Poisoning by ophthalmological drugs and preparations, undeterminedCategory
T49.5X4APoisoning by ophthalmological drugs and preparations, undetermined, initial encounterBillable
T49.5X4DPoisoning by ophthalmological drugs and preparations, undetermined, subsequent encounterBillable
T49.5X4SPoisoning by ophthalmological drugs and preparations, undetermined, sequelaBillable
T49.5X5Adverse effect of ophthalmological drugs and preparationsCategory
T49.5X5AAdverse effect of ophthalmological drugs and preparations, initial encounterBillable
T49.5X5DAdverse effect of ophthalmological drugs and preparations, subsequent encounterBillable
T49.5X5SAdverse effect of ophthalmological drugs and preparations, sequelaBillable
T49.5X6Underdosing of ophthalmological drugs and preparationsCategory
T49.5X6AUnderdosing of ophthalmological drugs and preparations, initial encounterBillable
T49.5X6DUnderdosing of ophthalmological drugs and preparations, subsequent encounterBillable
T49.5X6SUnderdosing of ophthalmological drugs and preparations, 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.