{"code":"M05.871","type":"code","title":"Other rheumatoid arthritis with rheumatoid factor of right ankle and foot","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["rheumatic fever (I00)","juvenile rheumatoid arthritis (M08.-)","rheumatoid arthritis of spine (M45.-)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Other rheumatoid arthritis with rheumatoid factor of right ankle and foot is a billable ICD-10-CM diagnosis code (M05.871). Excludes1 (not coded here): rheumatic fever (I00); juvenile rheumatoid arthritis (M08.-); rheumatoid arthritis of spine (M45.-).","officialDefinition":"Other rheumatoid arthritis with rheumatoid factor of right ankle and foot is a billable ICD-10-CM diagnosis code (M05.871). Excludes1 (not coded here): rheumatic fever (I00); juvenile rheumatoid arthritis (M08.-); rheumatoid arthritis of spine (M45.-).","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":""}