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ICD-10-CM · FY 2026 APRIL UPDATE

T50.8X

Poisoning by, adverse effect of and underdosing of diagnostic 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
T50.8X1Poisoning by diagnostic agents, accidental (unintentional)Category
T50.8X1APoisoning by diagnostic agents, accidental (unintentional), initial encounterBillable
T50.8X1DPoisoning by diagnostic agents, accidental (unintentional), subsequent encounterBillable
T50.8X1SPoisoning by diagnostic agents, accidental (unintentional), sequelaBillable
T50.8X2Poisoning by diagnostic agents, intentional self-harmCategory
T50.8X2APoisoning by diagnostic agents, intentional self-harm, initial encounterBillable
T50.8X2DPoisoning by diagnostic agents, intentional self-harm, subsequent encounterBillable
T50.8X2SPoisoning by diagnostic agents, intentional self-harm, sequelaBillable
T50.8X3Poisoning by diagnostic agents, assaultCategory
T50.8X3APoisoning by diagnostic agents, assault, initial encounterBillable
T50.8X3DPoisoning by diagnostic agents, assault, subsequent encounterBillable
T50.8X3SPoisoning by diagnostic agents, assault, sequelaBillable
T50.8X4Poisoning by diagnostic agents, undeterminedCategory
T50.8X4APoisoning by diagnostic agents, undetermined, initial encounterBillable
T50.8X4DPoisoning by diagnostic agents, undetermined, subsequent encounterBillable
T50.8X4SPoisoning by diagnostic agents, undetermined, sequelaBillable
T50.8X5Adverse effect of diagnostic agentsCategory
T50.8X5AAdverse effect of diagnostic agents, initial encounterBillable
T50.8X5DAdverse effect of diagnostic agents, subsequent encounterBillable
T50.8X5SAdverse effect of diagnostic agents, sequelaBillable
T50.8X6Underdosing of diagnostic agentsCategory
T50.8X6AUnderdosing of diagnostic agents, initial encounterBillable
T50.8X6DUnderdosing of diagnostic agents, subsequent encounterBillable
T50.8X6SUnderdosing of diagnostic 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.