{"code":"Q91.4","type":"code","title":"Trisomy 13, nonmosaicism (meiotic nondisjunction)","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["mitochondrial metabolic disorders (E88.4-)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["Q91","Q91.0","Q91.1","Q91.2","Q91.3","Q91.5","Q91.6","Q91.7"],"inclusionTerms":[],"sibling_titles":{"code":"Q91.7","title":"Trisomy 13, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Trisomy 13, nonmosaicism (meiotic nondisjunction) is a billable ICD-10-CM diagnosis code (Q91.4). Excludes2 (not included here): mitochondrial metabolic disorders (E88.4-).","officialDefinition":"Trisomy 13, nonmosaicism (meiotic nondisjunction) is a billable ICD-10-CM diagnosis code (Q91.4). Excludes2 (not included here): mitochondrial metabolic disorders (E88.4-).","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":"","noteProvenance":{"mitochondrial metabolic disorders (E88.4-)":"Q91"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[{"model":"RxHCC V08","hcc":"148"}]}}