{"code":"M66.174","type":"code","title":"Rupture of synovium, right foot","codeAlso":[],"includes":["rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength"],"modern_v":"official26","codeFirst":[],"excludes1":[],"excludes2":["rupture of popliteal cyst (M66.0)","rotator cuff syndrome (M75.1-)","rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region"],"isBillable":true,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":true,"billableFy2027":true},"inclusionTerms":[],"useAdditionalCode":[],"clinicalDefinition":"Rupture of synovium, right foot is a billable ICD-10-CM diagnosis code (M66.174). Includes: rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength. Excludes2 (not included here): rupture of popliteal cyst (M66.0); rotator cuff syndrome (M75.1-); rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region.","officialDefinition":"Rupture of synovium, right foot is a billable ICD-10-CM diagnosis code (M66.174). Includes: rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength. Excludes2 (not included here): rupture of popliteal cyst (M66.0); rotator cuff syndrome (M75.1-); rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region.","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":{"rotator cuff syndrome (M75.1-)":"M66","rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region":"M66","rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength":"M66","rupture of popliteal cyst (M66.0)":"M66.1","Rupture of synovial cyst":"M66.1"},"hcc":{"mapped":false,"model":"CMS-HCC V28","paymentYear":"2026","categories":[],"otherModels":[]}}