{"code":"T20.5","type":"code","title":"Corrosion of first degree of head, face, and neck","codeAlso":[],"includes":["burns and corrosions of first degree [erythema]","burns and corrosions of second degree [blisters][epidermal loss]","burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]"],"modern_v":"official26","codeFirst":["(T51-T65) to identify chemical and intent"],"excludes1":[],"excludes2":["burn and corrosion of ear drum (T28.41, T28.91)","burn and corrosion of eye and adnexa (T26.-)","burn and corrosion of mouth and pharynx (T28.0)"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["T20.50A","T20.50D","T20.50S","T20.511","T20.511A","T20.511D","T20.511S","T20.512","T20.512A","T20.512D","T20.512S","T20.519","T20.519A","T20.519D","T20.519S","T20.52A","T20.52D","T20.52S","T20.53A","T20.53D","T20.53S","T20.54A","T20.54D","T20.54S","T20.55A","T20.55D","T20.55S","T20.56A","T20.56D","T20.56S","T20.57A","T20.57D","T20.57S","T20.59A","T20.59D","T20.59S"],"inclusionTerms":[],"sibling_titles":{"code":"T20.59S","title":"Corrosion of first degree of multiple sites of head, face, and neck, sequela","isBillable":true},"useAdditionalCode":["external cause code to identify place (Y92)","code from category T31 or T32 to identify extent of body surface involved"],"clinicalDefinition":"Corrosion of first degree of head, face, and neck is a non-billable ICD-10-CM category code (T20.5). A more specific billable subcode must be selected for claims submission. Includes: burns and corrosions of first degree [erythema]; burns and corrosions of second degree [blisters][epidermal loss]; burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]. Excludes2 (not included here): burn and corrosion of ear drum (T28.41, T28.","officialDefinition":"Corrosion of first degree of head, face, and neck is a non-billable ICD-10-CM category code (T20.5). A more specific billable subcode must be selected for claims submission. Includes: burns and corrosions of first degree [erythema]; burns and corrosions of second degree [blisters][epidermal loss]; burns and corrosions of third degree [deep necrosis of underlying tissue] [full- thickness skin loss]. Excludes2 (not included here): burn and corrosion of ear drum (T28.41, T28.91); burn and corrosion of eye and adnexa (T26.-); burn and corrosion of mouth and pharynx (T28.0). Code first: (T51-T65) to identify chemical and intent. Use additional code: external cause code to identify place (Y92); code from category T31 or T32 to identify extent of body surface involved. 7th character: The appropriate 7th character is to be added to each code from category T20.","seventhCharacterInstructions":["The appropriate 7th character is to be added to each code from category T20"],"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":""}