{"code":"I09.1","type":"code","title":"Rheumatic diseases of endocardium, valve unspecified","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["endocarditis, valve unspecified (I38)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["I09","I09.0","I09.2","I09.8","I09.81","I09.89","I09.9"],"inclusionTerms":["Rheumatic endocarditis (chronic)","Rheumatic valvulitis (chronic)"],"sibling_titles":{"code":"I09.9","title":"Rheumatic heart disease, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Rheumatic diseases of endocardium, valve unspecified is a billable ICD-10-CM diagnosis code (I09.1). Inclusion terms: Rheumatic endocarditis (chronic); Rheumatic valvulitis (chronic). Excludes1 (not coded here): endocarditis, valve unspecified (I38).","officialDefinition":"Rheumatic diseases of endocardium, valve unspecified is a billable ICD-10-CM diagnosis code (I09.1). Inclusion terms: Rheumatic endocarditis (chronic); Rheumatic valvulitis (chronic). Excludes1 (not coded here): endocarditis, valve unspecified (I38).","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":""}