M66 Non-Billable Code

Spontaneous rupture of synovium and tendon

Chapter 13 Diseases of the musculoskeletal system and connective tissue (M00-M99)

M65-M67 Disorders of synovium and tendon (M65-M67)

includes

rupture that occurs when a normal force is applied to tissues that are inferred to have less than normal strength

excludes2

rotator cuff syndrome (M75.1-)
rupture where an abnormal force is applied to normal tissue - see injury of tendon by body region

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