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ICD-10-CM · FY 2026 APRIL UPDATE

T59

Toxic effect of other gases, fumes and vapors

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
T59.0Toxic effect of nitrogen oxidesCategory
T59.0XToxic effect of nitrogen oxidesCategory
T59.0X1Toxic effect of nitrogen oxides, accidental (unintentional)Category
T59.0X1AToxic effect of nitrogen oxides, accidental (unintentional), initial encounterBillable
T59.0X1DToxic effect of nitrogen oxides, accidental (unintentional), subsequent encounterBillable
T59.0X1SToxic effect of nitrogen oxides, accidental (unintentional), sequelaBillable
T59.0X2Toxic effect of nitrogen oxides, intentional self-harmCategory
T59.0X2AToxic effect of nitrogen oxides, intentional self-harm, initial encounterBillable
T59.0X2DToxic effect of nitrogen oxides, intentional self-harm, subsequent encounterBillable
T59.0X2SToxic effect of nitrogen oxides, intentional self-harm, sequelaBillable
T59.0X3Toxic effect of nitrogen oxides, assaultCategory
T59.0X3AToxic effect of nitrogen oxides, assault, initial encounterBillable
T59.0X3DToxic effect of nitrogen oxides, assault, subsequent encounterBillable
T59.0X3SToxic effect of nitrogen oxides, assault, sequelaBillable
T59.0X4Toxic effect of nitrogen oxides, undeterminedCategory
T59.0X4AToxic effect of nitrogen oxides, undetermined, initial encounterBillable
T59.0X4DToxic effect of nitrogen oxides, undetermined, subsequent encounterBillable
T59.0X4SToxic effect of nitrogen oxides, undetermined, sequelaBillable
T59.1Toxic effect of sulfur dioxideCategory
T59.1XToxic effect of sulfur dioxideCategory
T59.1X1Toxic effect of sulfur dioxide, accidental (unintentional)Category
T59.1X1AToxic effect of sulfur dioxide, accidental (unintentional), initial encounterBillable
T59.1X1DToxic effect of sulfur dioxide, accidental (unintentional), subsequent encounterBillable
T59.1X1SToxic effect of sulfur dioxide, accidental (unintentional), sequelaBillable
T59.1X2Toxic effect of sulfur dioxide, intentional self-harmCategory
T59.1X2AToxic effect of sulfur dioxide, intentional self-harm, initial encounterBillable
T59.1X2DToxic effect of sulfur dioxide, intentional self-harm, subsequent encounterBillable
T59.1X2SToxic effect of sulfur dioxide, intentional self-harm, sequelaBillable
T59.1X3Toxic effect of sulfur dioxide, assaultCategory
T59.1X3AToxic effect of sulfur dioxide, assault, 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.