{"code":"I49.81","type":"code","title":"Brugada syndrome","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":["cardiac arrhythmia complicating:","abortion or ectopic or molar pregnancy (O00-O07, O08.8)","obstetric surgery and procedures (O75.4)"],"excludes1":[],"excludes2":["bradycardia NOS (R00.1)","neonatal dysrhythmia (P29.1-)","sinoatrial bradycardia (R00.1)","sinus bradycardia (R00.1)","vagal bradycardia (R00.1)"],"isBillable":true,"fyEffectivity":{"fy2026":false,"fy2027":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"","officialDefinition":"","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":""}