{"code":"N64.0","type":"code","title":"Fissure and fistula of nipple","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"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},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Fissure and fistula of nipple is a billable ICD-10-CM diagnosis code (N64.0). 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-).","officialDefinition":"Fissure and fistula of nipple is a billable ICD-10-CM diagnosis code (N64.0). 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-).","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":""}