{"code":"D03.51","type":"code","title":"Melanoma in situ of anal skin","codeAlso":[],"includes":["Bowen's disease","erythroplasia","grade III intraepithelial neoplasia","Queyrat's erythroplasia"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":["Melanoma in situ of anal margin","Melanoma in situ of perianal skin"],"useAdditionalCode":[],"clinicalDefinition":"Melanoma in situ of anal skin is a billable ICD-10-CM diagnosis code (D03.51). Includes: Bowen's disease; erythroplasia; grade III intraepithelial neoplasia; Queyrat's erythroplasia. Inclusion terms: Melanoma in situ of anal margin; Melanoma in situ of perianal skin.","officialDefinition":"Melanoma in situ of anal skin is a billable ICD-10-CM diagnosis code (D03.51). Includes: Bowen's disease; erythroplasia; grade III intraepithelial neoplasia; Queyrat's erythroplasia. Inclusion terms: Melanoma in situ of anal margin; Melanoma in situ of perianal skin.","seventhCharacterInstructions":[],"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":{"Bowen's disease":"D03","erythroplasia":"D03","grade III intraepithelial neoplasia":"D03","Queyrat's erythroplasia":"D03"},"hcc":{"mapped":true,"model":"CMS-HCC V28","paymentYear":"2026","categories":[{"hcc":"23","label":"Prostate, Breast, and Other Cancers and Tumors","family":"","suppresses":[]}],"otherModels":[{"model":"CMS-HCC V22","hcc":"12"},{"model":"RxHCC V08","hcc":"22"}]}}