{"code":"N64.1","type":"code","title":"Fat necrosis of breast","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":["breast necrosis due to breast graft (T85.898)"],"excludes1":["disorders of breast associated with childbirth (O91-O92)"],"excludes2":["mechanical complication of breast prosthesis and implant (T85.4-)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["N64","N64.0","N64.2","N64.3","N64.4","N64.5","N64.51","N64.52","N64.53","N64.59","N64.8","N64.81","N64.82","N64.89","N64.9"],"inclusionTerms":["Fat necrosis (segmental) of breast"],"sibling_titles":{"code":"N64.9","title":"Disorder of breast, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Fat necrosis of breast is a billable ICD-10-CM diagnosis code (N64.1). Inclusion terms: Fat necrosis (segmental) of breast. Excludes1 (not coded here): disorders of breast associated with childbirth (O91-O92). Excludes2 (not included here): mechanical complication of breast prosthesis and implant (T85.4-). Code first: breast necrosis due to breast graft (T85.898).","officialDefinition":"Fat necrosis of breast is a billable ICD-10-CM diagnosis code (N64.1). Inclusion terms: Fat necrosis (segmental) of breast. Excludes1 (not coded here): disorders of breast associated with childbirth (O91-O92). Excludes2 (not included here): mechanical complication of breast prosthesis and implant (T85.4-). Code first: breast necrosis due to breast graft (T85.898).","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":""}