{"code":"D01.3","type":"code","title":"Carcinoma in situ of anus and anal canal","codeAlso":[],"includes":["Bowen's disease","erythroplasia","grade III intraepithelial neoplasia","Queyrat's erythroplasia"],"modern_v":"official26","codeFirst":[],"excludes1":["anal intraepithelial neoplasia I and II [AIN I and AIN II] (K62.82)","carcinoma in situ of anal margin (D04.5)","carcinoma in situ of anal skin (D04.5)","carcinoma in situ of perianal skin (D04.5)","melanoma in situ (D03.-)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":["Anal intraepithelial neoplasia III [AIN III]","Severe dysplasia of anus"],"useAdditionalCode":[],"clinicalDefinition":"Carcinoma in situ of anus and anal canal is a billable ICD-10-CM diagnosis code (D01.3). Includes: Bowen's disease; erythroplasia; grade III intraepithelial neoplasia; Queyrat's erythroplasia. Inclusion terms: Anal intraepithelial neoplasia III [AIN III]; Severe dysplasia of anus. Excludes1 (not coded here): anal intraepithelial neoplasia I and II [AIN I and AIN II] (K62.82); carcinoma in situ of anal margin (D04.5); carcinoma in situ of anal skin (D04.5); carcinoma in situ of perianal skin (D04.5); melanoma in situ (D03.-).","officialDefinition":"Carcinoma in situ of anus and anal canal is a billable ICD-10-CM diagnosis code (D01.3). Includes: Bowen's disease; erythroplasia; grade III intraepithelial neoplasia; Queyrat's erythroplasia. Inclusion terms: Anal intraepithelial neoplasia III [AIN III]; Severe dysplasia of anus. Excludes1 (not coded here): anal intraepithelial neoplasia I and II [AIN I and AIN II] (K62.82); carcinoma in situ of anal margin (D04.5); carcinoma in situ of anal skin (D04.5); carcinoma in situ of perianal skin (D04.5); melanoma in situ (D03.-).","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":""}