{"code":"A75.1","type":"code","title":"Recrudescent typhus [Brill's disease]","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["rickettsiosis due to Ehrlichia sennetsu (A79.81)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"sibling_codes":["A75","A75.0","A75.2","A75.3","A75.9"],"inclusionTerms":["Brill-Zinsser disease"],"sibling_titles":{"code":"A75.9","title":"Typhus fever, unspecified","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Recrudescent typhus [Brill's disease] is a billable ICD-10-CM diagnosis code (A75.1). Inclusion terms: Brill-Zinsser disease. Excludes1 (not coded here): rickettsiosis due to Ehrlichia sennetsu (A79.81).","officialDefinition":"Recrudescent typhus [Brill's disease] is a billable ICD-10-CM diagnosis code (A75.1). Inclusion terms: Brill-Zinsser disease. Excludes1 (not coded here): rickettsiosis due to Ehrlichia sennetsu (A79.81).","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":""}