{"code":"Q20.9","type":"code","title":"Congenital malformation of cardiac chambers and connections, unspecified","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["dextrocardia with situs inversus (Q89.3)","mirror-image atrial arrangement with situs inversus (Q89.3)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["Q20","Q20.0","Q20.1","Q20.2","Q20.3","Q20.4","Q20.5","Q20.6","Q20.8"],"inclusionTerms":[],"sibling_titles":{"code":"Q20.8","title":"Code","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Congenital malformation of cardiac chambers and connections, unspecified is a billable ICD-10-CM diagnosis code (Q20.9). Excludes1 (not coded here): dextrocardia with situs inversus (Q89.3); mirror-image atrial arrangement with situs inversus (Q89.3).","officialDefinition":"Congenital malformation of cardiac chambers and connections, unspecified is a billable ICD-10-CM diagnosis code (Q20.9). Excludes1 (not coded here): dextrocardia with situs inversus (Q89.3); mirror-image atrial arrangement with situs inversus (Q89.3).","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":""}