{"code":"T58.8X1","type":"category","title":"Toxic effect of carbon monoxide from other source, accidental (unintentional)","codeAlso":[],"includes":["asphyxiation from carbon monoxide","toxic effect of carbon monoxide from all sources"],"modern_v":"official26","codeFirst":[],"excludes1":["contact with and (suspected) exposure to toxic substances (Z77.-)"],"excludes2":[],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"inclusionTerms":[],"useAdditionalCode":["code(s):","for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)","personal history of foreign body fully removed (Z87.821)","to identify any retained foreign body, if applicable (Z18.-)"],"clinicalDefinition":"Toxic effect of carbon monoxide from other source, accidental (unintentional) is a non-billable ICD-10-CM category code (T58.8X1). A more specific billable subcode must be selected for claims submission. Includes: asphyxiation from carbon monoxide; toxic effect of carbon monoxide from all sources. Excludes1 (not coded here): contact with and (suspected) exposure to toxic substances (Z77.-).","officialDefinition":"Toxic effect of carbon monoxide from other source, accidental (unintentional) is a non-billable ICD-10-CM category code (T58.8X1). A more specific billable subcode must be selected for claims submission. Includes: asphyxiation from carbon monoxide; toxic effect of carbon monoxide from all sources. Excludes1 (not coded here): contact with and (suspected) exposure to toxic substances (Z77.-). Use additional code: code(s):; for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70); personal history of foreign body fully removed (Z87.821); to identify any retained foreign body, if applicable (Z18.-). 7th character: The appropriate 7th character is to be added to each code from category T58.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category T58"],"workflowProtocols":[],"guidelines":{"whenToUse":[],"whenNotToUse":[],"commonBillingMistakes":[],"codeComparisons":[],"documentationChecklist":[]},"domainLandscape":{"summary":"Primary diagnostic domain and clinical landscape evaluation.","keyCategories":[],"diagnosticContinuum":"Progression continuum from acute presentation to resolution."},"children":[],"hierarchy":[],"relatedCodes":[],"relevantCPTCodes":[],"documentationTips":[],"caseStudies":[],"description":"","overview":"","noteProvenance":{"contact with and (suspected) exposure to toxic substances (Z77.-)":"T58","code(s):":"T58","for all associated manifestations of toxic effect, such as: respiratory conditions due to external agents (J60-J70)":"T58","personal history of foreign body fully removed (Z87.821)":"T58","to identify any retained foreign body, if applicable (Z18.-)":"T58","asphyxiation from carbon monoxide":"T58","toxic effect of carbon monoxide from all sources":"T58","Toxic effect of carbon monoxide from blast furnace gas":"T58.8","Toxic effect of carbon monoxide from fuels in industrial use":"T58.8","Toxic effect of carbon monoxide from kiln vapor":"T58.8"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}