{"code":"Z42.1","type":"code","title":"Encounter for breast reconstruction following mastectomy","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["deformity and disproportion of reconstructed breast (N65.1-)","encounter for cosmetic plastic surgery (Z41.1)","encounter for plastic surgery for treatment of current injury - code to relevent injury"],"excludes2":["follow-up examination for medical surveillance after treatment (Z08-Z09)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["Z42","Z42.8"],"inclusionTerms":[],"sibling_titles":{"code":"Z42.8","title":"Encounter for other plastic and reconstructive surgery following medical procedure or healed injury","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Encounter for breast reconstruction following mastectomy is a billable ICD-10-CM diagnosis code (Z42.1). Excludes1 (not coded here): deformity and disproportion of reconstructed breast (N65.1-); encounter for cosmetic plastic surgery (Z41.1); encounter for plastic surgery for treatment of current injury - code to relevent injury. Excludes2 (not included here): follow-up examination for medical surveillance after treatment (Z08-Z09).","officialDefinition":"Encounter for breast reconstruction following mastectomy is a billable ICD-10-CM diagnosis code (Z42.1). Excludes1 (not coded here): deformity and disproportion of reconstructed breast (N65.1-); encounter for cosmetic plastic surgery (Z41.1); encounter for plastic surgery for treatment of current injury - code to relevent injury. Excludes2 (not included here): follow-up examination for medical surveillance after treatment (Z08-Z09).","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":""}