ICD-10-CM category
M66 Spontaneous rupture of synovium and tendon
M66 is a category, not a billable code. Report one of the 103 complete codes below.
M66.0…
1 code
M66.1…
29 codes
- M66.10Rupture of synovium, unspecified joint
- M66.111Rupture of synovium, right shoulder
- M66.112Rupture of synovium, left shoulder
- M66.119Rupture of synovium, unspecified shoulder
- M66.121Rupture of synovium, right elbow
- M66.122Rupture of synovium, left elbow
- M66.129Rupture of synovium, unspecified elbow
- M66.131Rupture of synovium, right wrist
- M66.132Rupture of synovium, left wrist
- M66.139Rupture of synovium, unspecified wrist
- M66.141Rupture of synovium, right hand
- M66.142Rupture of synovium, left hand
- M66.143Rupture of synovium, unspecified hand
- M66.144Rupture of synovium, right finger(s)
- M66.145Rupture of synovium, left finger(s)
- M66.146Rupture of synovium, unspecified finger(s)
- M66.151Rupture of synovium, right hip
- M66.152Rupture of synovium, left hip
- M66.159Rupture of synovium, unspecified hip
- M66.171Rupture of synovium, right ankle
- M66.172Rupture of synovium, left ankle
- M66.173Rupture of synovium, unspecified ankle
- M66.174Rupture of synovium, right foot
- M66.175Rupture of synovium, left foot
- M66.176Rupture of synovium, unspecified foot
- M66.177Rupture of synovium, right toe(s)
- M66.178Rupture of synovium, left toe(s)
- M66.179Rupture of synovium, unspecified toe(s)
- M66.18Rupture of synovium, other site
M66.2…
24 codes
- M66.20Spontaneous rupture of extensor tendons, unspecified site
- M66.211Spontaneous rupture of extensor tendons, right shoulder
- M66.212Spontaneous rupture of extensor tendons, left shoulder
- M66.219Spontaneous rupture of extensor tendons, unspecified shoulder
- M66.221Spontaneous rupture of extensor tendons, right upper arm
- M66.222Spontaneous rupture of extensor tendons, left upper arm
- M66.229Spontaneous rupture of extensor tendons, unspecified upper arm
- M66.231Spontaneous rupture of extensor tendons, right forearm
- M66.232Spontaneous rupture of extensor tendons, left forearm
- M66.239Spontaneous rupture of extensor tendons, unspecified forearm
- M66.241Spontaneous rupture of extensor tendons, right hand
- M66.242Spontaneous rupture of extensor tendons, left hand
- M66.249Spontaneous rupture of extensor tendons, unspecified hand
- M66.251Spontaneous rupture of extensor tendons, right thigh
- M66.252Spontaneous rupture of extensor tendons, left thigh
- M66.259Spontaneous rupture of extensor tendons, unspecified thigh
- M66.261Spontaneous rupture of extensor tendons, right lower leg
- M66.262Spontaneous rupture of extensor tendons, left lower leg
- M66.269Spontaneous rupture of extensor tendons, unspecified lower leg
- M66.271Spontaneous rupture of extensor tendons, right ankle and foot
- M66.272Spontaneous rupture of extensor tendons, left ankle and foot
- M66.279Spontaneous rupture of extensor tendons, unspecified ankle and foot
- M66.28Spontaneous rupture of extensor tendons, other site
- M66.29Spontaneous rupture of extensor tendons, multiple sites
M66.3…
24 codes
- M66.30Spontaneous rupture of flexor tendons, unspecified site
- M66.311Spontaneous rupture of flexor tendons, right shoulder
- M66.312Spontaneous rupture of flexor tendons, left shoulder
- M66.319Spontaneous rupture of flexor tendons, unspecified shoulder
- M66.321Spontaneous rupture of flexor tendons, right upper arm
- M66.322Spontaneous rupture of flexor tendons, left upper arm
- M66.329Spontaneous rupture of flexor tendons, unspecified upper arm
- M66.331Spontaneous rupture of flexor tendons, right forearm
- M66.332Spontaneous rupture of flexor tendons, left forearm
- M66.339Spontaneous rupture of flexor tendons, unspecified forearm
- M66.341Spontaneous rupture of flexor tendons, right hand
- M66.342Spontaneous rupture of flexor tendons, left hand
- M66.349Spontaneous rupture of flexor tendons, unspecified hand
- M66.351Spontaneous rupture of flexor tendons, right thigh
- M66.352Spontaneous rupture of flexor tendons, left thigh
- M66.359Spontaneous rupture of flexor tendons, unspecified thigh
- M66.361Spontaneous rupture of flexor tendons, right lower leg
- M66.362Spontaneous rupture of flexor tendons, left lower leg
- M66.369Spontaneous rupture of flexor tendons, unspecified lower leg
- M66.371Spontaneous rupture of flexor tendons, right ankle and foot
- M66.372Spontaneous rupture of flexor tendons, left ankle and foot
- M66.379Spontaneous rupture of flexor tendons, unspecified ankle and foot
- M66.38Spontaneous rupture of flexor tendons, other site
- M66.39Spontaneous rupture of flexor tendons, multiple sites
M66.8…
24 codes
- M66.80Spontaneous rupture of other tendons, unspecified site
- M66.811Spontaneous rupture of other tendons, right shoulder
- M66.812Spontaneous rupture of other tendons, left shoulder
- M66.819Spontaneous rupture of other tendons, unspecified shoulder
- M66.821Spontaneous rupture of other tendons, right upper arm
- M66.822Spontaneous rupture of other tendons, left upper arm
- M66.829Spontaneous rupture of other tendons, unspecified upper arm
- M66.831Spontaneous rupture of other tendons, right forearm
- M66.832Spontaneous rupture of other tendons, left forearm
- M66.839Spontaneous rupture of other tendons, unspecified forearm
- M66.841Spontaneous rupture of other tendons, right hand
- M66.842Spontaneous rupture of other tendons, left hand
- M66.849Spontaneous rupture of other tendons, unspecified hand
- M66.851Spontaneous rupture of other tendons, right thigh
- M66.852Spontaneous rupture of other tendons, left thigh
- M66.859Spontaneous rupture of other tendons, unspecified thigh
- M66.861Spontaneous rupture of other tendons, right lower leg
- M66.862Spontaneous rupture of other tendons, left lower leg
- M66.869Spontaneous rupture of other tendons, unspecified lower leg
- M66.871Spontaneous rupture of other tendons, right ankle and foot
- M66.872Spontaneous rupture of other tendons, left ankle and foot
- M66.879Spontaneous rupture of other tendons, unspecified ankle and foot
- M66.88Spontaneous rupture of other tendons, other sites
- M66.89Spontaneous rupture of other tendons, multiple sites
M66.9…
1 code
Outside the US? M66 in the international WHO ICD-10 lists its inclusion and exclusion notes.
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ICD-10-CM is developed by the National Center for Health Statistics (NCHS), Centers for Disease Control and Prevention, U.S. Department of Health and Human Services, and is based on the WHO ICD-10. Codes and titles are reproduced unchanged from the FY2026 code list (effective 1 October 2025). Their use here does not imply endorsement by CDC, HHS or the U.S. Government. Changes effective on or after 1 October 2026 may not be reflected yet; check the current release at cdc.gov or cms.gov before submitting claims.
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