{"code":"C84.09","type":"code","title":"Mycosis fungoides, extranodal and solid organ sites","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["peripheral T-cell lymphoma, not elsewhere classified (C84.4-)","personal history of non-Hodgkin lymphoma (Z85.72)"],"excludes2":["Kaposi's sarcoma of lymph nodes (C46.3)","secondary and unspecified neoplasm of lymph nodes (C77.-)","secondary neoplasm of bone marrow (C79.52)","secondary neoplasm of spleen (C78.89)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Mycosis fungoides, extranodal and solid organ sites is a billable ICD-10-CM diagnosis code (C84.09). Excludes1 (not coded here): peripheral T-cell lymphoma, not elsewhere classified (C84.4-); personal history of non-Hodgkin lymphoma (Z85.72). Excludes2 (not included here): Kaposi's sarcoma of lymph nodes (C46.3); secondary and unspecified neoplasm of lymph nodes (C77.-); secondary neoplasm of bone marrow (C79.52); secondary neoplasm of spleen (C78.89).","officialDefinition":"Mycosis fungoides, extranodal and solid organ sites is a billable ICD-10-CM diagnosis code (C84.09). Excludes1 (not coded here): peripheral T-cell lymphoma, not elsewhere classified (C84.4-); personal history of non-Hodgkin lymphoma (Z85.72). Excludes2 (not included here): Kaposi's sarcoma of lymph nodes (C46.3); secondary and unspecified neoplasm of lymph nodes (C77.-); secondary neoplasm of bone marrow (C79.52); secondary neoplasm of spleen (C78.89).","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":""}