{"code":"M66.2","type":"code","title":"Spontaneous rupture of extensor tendons","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":["rotator cuff syndrome (M75.1-)","rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region"],"isBillable":false,"fyEffectivity":{"fy2026":true,"fy2027":true,"billableFy2026":false,"billableFy2027":false},"sibling_codes":["M66.20","M66.21","M66.211","M66.212","M66.219","M66.22","M66.221","M66.222","M66.229","M66.23","M66.231","M66.232","M66.239","M66.24","M66.241","M66.242","M66.249","M66.25","M66.251","M66.252","M66.259","M66.26","M66.261","M66.262","M66.269","M66.27","M66.271","M66.272","M66.279","M66.28","M66.29"],"inclusionTerms":[],"sibling_titles":{"code":"M66.29","title":"Spontaneous rupture of extensor tendons, multiple sites","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Spontaneous rupture of extensor tendons is a non-billable ICD-10-CM category code (M66.2). A more specific billable subcode must be selected for claims submission. 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): rotator cuff syndrome (M75.1-); rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region.","officialDefinition":"Spontaneous rupture of extensor tendons is a non-billable ICD-10-CM category code (M66.2). A more specific billable subcode must be selected for claims submission. 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): 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":""}