All ICD10 Codes
Chapter 13

M00–M99: Diseases of the Musculoskeletal System and Connective Tissue

Diseases of the Musculoskeletal System and Connective Tissue diagnostic classification updated for 2026.

Chapter Instructions

Excludes2(Not included here. Code separately if applicable.)
  • arthropathic psoriasis (L40.5-)
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • compartment syndrome (traumatic) (T79.A-)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
All CodesBillable Only
Internal Codes
PrevNext
  • M66.80—

    Spontaneous rupture of other tendons, unspecified site

  • M66.811—

    Spontaneous rupture of other tendons, right shoulder

  • M66.812—

    Spontaneous rupture of other tendons, left shoulder

  • M66.819—

    Spontaneous rupture of other tendons, unspecified shoulder

  • M66.821—

    Spontaneous rupture of other tendons, right upper arm

  • M66.822—

    Spontaneous rupture of other tendons, left upper arm

  • M66.829—

    Spontaneous rupture of other tendons, unspecified upper arm

  • M66.831—

    Spontaneous rupture of other tendons, right forearm

  • M66.832—

    Spontaneous rupture of other tendons, left forearm

  • M66.839—

    Spontaneous rupture of other tendons, unspecified forearm

  • M66.841—

    Spontaneous rupture of other tendons, right hand

  • M66.842—

    Spontaneous rupture of other tendons, left hand

  • M66.849—

    Spontaneous rupture of other tendons, unspecified hand

  • M66.851—

    Spontaneous rupture of other tendons, right thigh

  • M66.852—

    Spontaneous rupture of other tendons, left thigh

  • M66.859—

    Spontaneous rupture of other tendons, unspecified thigh

  • M66.861—

    Spontaneous rupture of other tendons, right lower leg

  • M66.862—

    Spontaneous rupture of other tendons, left lower leg

  • M66.869—

    Spontaneous rupture of other tendons, unspecified lower leg

  • M66.871—

    Spontaneous rupture of other tendons, right ankle and foot

  • M66.872—

    Spontaneous rupture of other tendons, left ankle and foot

  • M66.879—

    Spontaneous rupture of other tendons, unspecified ankle and foot

  • M66.88—

    Spontaneous rupture of other tendons, other sites

  • M66.89—

    Spontaneous rupture of other tendons, multiple sites

  • M66.9—

    Spontaneous rupture of unspecified tendon

  • M67.00—

    Short Achilles tendon (acquired), unspecified ankle

  • M67.01—

    Short Achilles tendon (acquired), right ankle

  • M67.02—

    Short Achilles tendon (acquired), left ankle

  • M67.20—

    Synovial hypertrophy, not elsewhere classified, unspecified site

  • M67.211—

    Synovial hypertrophy, not elsewhere classified, right shoulder

  • M67.212—

    Synovial hypertrophy, not elsewhere classified, left shoulder

  • M67.219—

    Synovial hypertrophy, not elsewhere classified, unspecified shoulder

  • M67.221—

    Synovial hypertrophy, not elsewhere classified, right upper arm

  • M67.222—

    Synovial hypertrophy, not elsewhere classified, left upper arm

  • M67.229—

    Synovial hypertrophy, not elsewhere classified, unspecified upper arm

  • M67.231—

    Synovial hypertrophy, not elsewhere classified, right forearm

  • M67.232—

    Synovial hypertrophy, not elsewhere classified, left forearm

  • M67.239—

    Synovial hypertrophy, not elsewhere classified, unspecified forearm

  • M67.241—

    Synovial hypertrophy, not elsewhere classified, right hand

  • M67.242—

    Synovial hypertrophy, not elsewhere classified, left hand

  • M67.249—

    Synovial hypertrophy, not elsewhere classified, unspecified hand

  • M67.251—

    Synovial hypertrophy, not elsewhere classified, right thigh

  • M67.252—

    Synovial hypertrophy, not elsewhere classified, left thigh

  • M67.259—

    Synovial hypertrophy, not elsewhere classified, unspecified thigh

  • M67.261—

    Synovial hypertrophy, not elsewhere classified, right lower leg

  • M67.262—

    Synovial hypertrophy, not elsewhere classified, left lower leg

  • M67.269—

    Synovial hypertrophy, not elsewhere classified, unspecified lower leg

  • M67.271—

    Synovial hypertrophy, not elsewhere classified, right ankle and foot

  • M67.272—

    Synovial hypertrophy, not elsewhere classified, left ankle and foot

  • M67.279—

    Synovial hypertrophy, not elsewhere classified, unspecified ankle and foot

PreviousPage 76 of 141Next