{"code":"Q26.8","type":"code","title":"Other congenital malformations of great veins","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":["Absence of vena cava (inferior) (superior)","Azygos continuation of inferior vena cava","Persistent left posterior cardinal vein","Scimitar syndrome"],"useAdditionalCode":[],"clinicalDefinition":"Other congenital malformations of great veins is a billable ICD-10-CM diagnosis code (Q26.8). Inclusion terms: Absence of vena cava (inferior) (superior); Azygos continuation of inferior vena cava; Persistent left posterior cardinal vein; Scimitar syndrome.","officialDefinition":"Other congenital malformations of great veins is a billable ICD-10-CM diagnosis code (Q26.8). Inclusion terms: Absence of vena cava (inferior) (superior); Azygos continuation of inferior vena cava; Persistent left posterior cardinal vein; Scimitar syndrome.","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":""}