{"code":"M13.162","type":"code","title":"Monoarthritis, not elsewhere classified, left knee","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["arthrosis (M15-M19)","osteoarthritis (M15-M19)"],"excludes2":[],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Monoarthritis, not elsewhere classified, left knee is a billable ICD-10-CM diagnosis code (M13.162). Excludes1 (not coded here): arthrosis (M15-M19); osteoarthritis (M15-M19).","officialDefinition":"Monoarthritis, not elsewhere classified, left knee is a billable ICD-10-CM diagnosis code (M13.162). Excludes1 (not coded here): arthrosis (M15-M19); osteoarthritis (M15-M19).","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":"","hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}