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ICD-10-CM · FY 2026 APRIL UPDATE

T37

Poisoning by, adverse effect of and underdosing of other systemic anti-infectives and antiparasitics

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
T37.0Poisoning by, adverse effect of and underdosing of sulfonamidesCategory
T37.0XPoisoning by, adverse effect of and underdosing of sulfonamidesCategory
T37.0X1Poisoning by sulfonamides, accidental (unintentional)Category
T37.0X1APoisoning by sulfonamides, accidental (unintentional), initial encounterBillable
T37.0X1DPoisoning by sulfonamides, accidental (unintentional), subsequent encounterBillable
T37.0X1SPoisoning by sulfonamides, accidental (unintentional), sequelaBillable
T37.0X2Poisoning by sulfonamides, intentional self-harmCategory
T37.0X2APoisoning by sulfonamides, intentional self-harm, initial encounterBillable
T37.0X2DPoisoning by sulfonamides, intentional self-harm, subsequent encounterBillable
T37.0X2SPoisoning by sulfonamides, intentional self-harm, sequelaBillable
T37.0X3Poisoning by sulfonamides, assaultCategory
T37.0X3APoisoning by sulfonamides, assault, initial encounterBillable
T37.0X3DPoisoning by sulfonamides, assault, subsequent encounterBillable
T37.0X3SPoisoning by sulfonamides, assault, sequelaBillable
T37.0X4Poisoning by sulfonamides, undeterminedCategory
T37.0X4APoisoning by sulfonamides, undetermined, initial encounterBillable
T37.0X4DPoisoning by sulfonamides, undetermined, subsequent encounterBillable
T37.0X4SPoisoning by sulfonamides, undetermined, sequelaBillable
T37.0X5Adverse effect of sulfonamidesCategory
T37.0X5AAdverse effect of sulfonamides, initial encounterBillable
T37.0X5DAdverse effect of sulfonamides, subsequent encounterBillable
T37.0X5SAdverse effect of sulfonamides, sequelaBillable
T37.0X6Underdosing of sulfonamidesCategory
T37.0X6AUnderdosing of sulfonamides, initial encounterBillable
T37.0X6DUnderdosing of sulfonamides, subsequent encounterBillable
T37.0X6SUnderdosing of sulfonamides, sequelaBillable
T37.1Poisoning by, adverse effect of and underdosing of antimycobacterial drugsCategory
T37.1XPoisoning by, adverse effect of and underdosing of antimycobacterial drugsCategory
T37.1X1Poisoning by antimycobacterial drugs, accidental (unintentional)Category
T37.1X1APoisoning by antimycobacterial drugs, accidental (unintentional), initial encounterBillable

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.