{"code":"M23.001","type":"code","title":"Cystic meniscus, unspecified lateral meniscus, left knee","codeAlso":[],"includes":[],"modern_v":"official26","codeFirst":[],"excludes1":["ankylosis (M24.66)","deformity of knee (M21.-)","osteochondritis dissecans (M93.2)"],"excludes2":["current injury - see injury of knee and lower leg (S80-S89)","recurrent dislocation or subluxation of joints (M24.4)","recurrent dislocation or subluxation of patella (M22.0-M22.1)","joints of the spine (M40-M54)"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Cystic meniscus, unspecified lateral meniscus, left knee is a billable ICD-10-CM diagnosis code (M23.001). Excludes1 (not coded here): ankylosis (M24.66); deformity of knee (M21.-); osteochondritis dissecans (M93.2). Excludes2 (not included here): current injury - see injury of knee and lower leg (S80-S89); recurrent dislocation or subluxation of joints (M24.4); recurrent dislocation or subluxation of patella (M22.0-M22.1); joints of the spine (M40-M54).","officialDefinition":"Cystic meniscus, unspecified lateral meniscus, left knee is a billable ICD-10-CM diagnosis code (M23.001). Excludes1 (not coded here): ankylosis (M24.66); deformity of knee (M21.-); osteochondritis dissecans (M93.2). Excludes2 (not included here): current injury - see injury of knee and lower leg (S80-S89); recurrent dislocation or subluxation of joints (M24.4); recurrent dislocation or subluxation of patella (M22.0-M22.1); joints of the spine (M40-M54).","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":"","noteProvenance":{"ankylosis (M24.66)":"M23","deformity of knee (M21.-)":"M23","osteochondritis dissecans (M93.2)":"M23","current injury - see injury of knee and lower leg (S80-S89)":"M23","recurrent dislocation or subluxation of joints (M24.4)":"M23","recurrent dislocation or subluxation of patella (M22.0-M22.1)":"M23","joints of the spine (M40-M54)":"M23","Cystic meniscus, unspecified lateral meniscus":"M23.00","Cystic meniscus, unspecified medial meniscus":"M23.00"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}