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ICD-10-CM · FY 2026 APRIL UPDATE

T58

Toxic effect of carbon monoxide

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
T58.0Toxic effect of carbon monoxide from motor vehicle exhaustCategory
T58.01Toxic effect of carbon monoxide from motor vehicle exhaust, accidental (unintentional)Category
T58.01XAToxic effect of carbon monoxide from motor vehicle exhaust, accidental (unintentional), initial encounterBillable
T58.01XDToxic effect of carbon monoxide from motor vehicle exhaust, accidental (unintentional), subsequent encounterBillable
T58.01XSToxic effect of carbon monoxide from motor vehicle exhaust, accidental (unintentional), sequelaBillable
T58.02Toxic effect of carbon monoxide from motor vehicle exhaust, intentional self-harmCategory
T58.02XAToxic effect of carbon monoxide from motor vehicle exhaust, intentional self-harm, initial encounterBillable
T58.02XDToxic effect of carbon monoxide from motor vehicle exhaust, intentional self-harm, subsequent encounterBillable
T58.02XSToxic effect of carbon monoxide from motor vehicle exhaust, intentional self-harm, sequelaBillable
T58.03Toxic effect of carbon monoxide from motor vehicle exhaust, assaultCategory
T58.03XAToxic effect of carbon monoxide from motor vehicle exhaust, assault, initial encounterBillable
T58.03XDToxic effect of carbon monoxide from motor vehicle exhaust, assault, subsequent encounterBillable
T58.03XSToxic effect of carbon monoxide from motor vehicle exhaust, assault, sequelaBillable
T58.04Toxic effect of carbon monoxide from motor vehicle exhaust, undeterminedCategory
T58.04XAToxic effect of carbon monoxide from motor vehicle exhaust, undetermined, initial encounterBillable
T58.04XDToxic effect of carbon monoxide from motor vehicle exhaust, undetermined, subsequent encounterBillable
T58.04XSToxic effect of carbon monoxide from motor vehicle exhaust, undetermined, sequelaBillable
T58.1Toxic effect of carbon monoxide from utility gasCategory
T58.11Toxic effect of carbon monoxide from utility gas, accidental (unintentional)Category
T58.11XAToxic effect of carbon monoxide from utility gas, accidental (unintentional), initial encounterBillable
T58.11XDToxic effect of carbon monoxide from utility gas, accidental (unintentional), subsequent encounterBillable
T58.11XSToxic effect of carbon monoxide from utility gas, accidental (unintentional), sequelaBillable
T58.12Toxic effect of carbon monoxide from utility gas, intentional self-harmCategory
T58.12XAToxic effect of carbon monoxide from utility gas, intentional self-harm, initial encounterBillable
T58.12XDToxic effect of carbon monoxide from utility gas, intentional self-harm, subsequent encounterBillable
T58.12XSToxic effect of carbon monoxide from utility gas, intentional self-harm, sequelaBillable
T58.13Toxic effect of carbon monoxide from utility gas, assaultCategory
T58.13XAToxic effect of carbon monoxide from utility gas, assault, initial encounterBillable
T58.13XDToxic effect of carbon monoxide from utility gas, assault, subsequent encounterBillable
T58.13XSToxic effect of carbon monoxide from utility gas, assault, 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.