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M66 - Spontaneous rupture of synovium and tendon


The ICD 10 Code for Spontaneous rupture of synovium and tendon is listed as M66.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: M66
Description: Spontaneous rupture of synovium and tendon
  • 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
Chapter Diseases of the musculoskeletal system and connective tissue (M00-M99)
ICD-10-CM Children (deeper level / typically more specific) of M66:
M66.0 - Rupture of popliteal cyst
M66.1 - Rupture of synovium
M66.2 - Spontaneous rupture of extensor tendons
M66.3 - Spontaneous rupture of flexor tendons
M66.8 - Spontaneous rupture of other tendons
M66.9 - Spontaneous rupture of unspecified tendon