{"code":"M66.32","type":"code","title":"Spontaneous rupture of flexor tendons, upper arm","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},"sibling_codes":["M66.321","M66.322","M66.329"],"inclusionTerms":[],"sibling_titles":{"code":"M66.329","title":"Spontaneous rupture of flexor tendons, unspecified upper arm","isBillable":true},"useAdditionalCode":[],"clinicalDefinition":"Spontaneous rupture of flexor tendons, upper arm is a non-billable ICD-10-CM category code (M66.32). 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 flexor tendons, upper arm is a non-billable ICD-10-CM category code (M66.32). 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":""}