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
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  • M67.50—

    Plica syndrome, unspecified knee

  • M67.51—

    Plica syndrome, right knee

  • M67.52—

    Plica syndrome, left knee

  • M67.80—

    Other specified disorders of synovium and tendon, unspecified site

  • M67.811—

    Other specified disorders of synovium, right shoulder

  • M67.812—

    Other specified disorders of synovium, left shoulder

  • M67.813—

    Other specified disorders of tendon, right shoulder

  • M67.814—

    Other specified disorders of tendon, left shoulder

  • M67.819—

    Other specified disorders of synovium and tendon, unspecified shoulder

  • M67.821—

    Other specified disorders of synovium, right elbow

  • M67.822—

    Other specified disorders of synovium, left elbow

  • M67.823—

    Other specified disorders of tendon, right elbow

  • M67.824—

    Other specified disorders of tendon, left elbow

  • M67.829—

    Other specified disorders of synovium and tendon, unspecified elbow

  • M67.831—

    Other specified disorders of synovium, right wrist

  • M67.832—

    Other specified disorders of synovium, left wrist

  • M67.833—

    Other specified disorders of tendon, right wrist

  • M67.834—

    Other specified disorders of tendon, left wrist

  • M67.839—

    Other specified disorders of synovium and tendon, unspecified wrist

  • M67.841—

    Other specified disorders of synovium, right hand

  • M67.842—

    Other specified disorders of synovium, left hand

  • M67.843—

    Other specified disorders of tendon, right hand

  • M67.844—

    Other specified disorders of tendon, left hand

  • M67.849—

    Other specified disorders of synovium and tendon, unspecified hand

  • M67.851—

    Other specified disorders of synovium, right hip

  • M67.852—

    Other specified disorders of synovium, left hip

  • M67.853—

    Other specified disorders of tendon, right hip

  • M67.854—

    Other specified disorders of tendon, left hip

  • M67.859—

    Other specified disorders of synovium and tendon, unspecified hip

  • M67.861—

    Other specified disorders of synovium, right knee

  • M67.862—

    Other specified disorders of synovium, left knee

  • M67.863—

    Other specified disorders of tendon, right knee

  • M67.864—

    Other specified disorders of tendon, left knee

  • M67.869—

    Other specified disorders of synovium and tendon, unspecified knee

  • M67.871—

    Other specified disorders of synovium, right ankle and foot

  • M67.872—

    Other specified disorders of synovium, left ankle and foot

  • M67.873—

    Other specified disorders of tendon, right ankle and foot

  • M67.874—

    Other specified disorders of tendon, left ankle and foot

  • M67.879—

    Other specified disorders of synovium and tendon, unspecified ankle and foot

  • M67.88—

    Other specified disorders of synovium and tendon, other site

  • M67.89—

    Other specified disorders of synovium and tendon, multiple sites

  • M67.90—

    Unspecified disorder of synovium and tendon, unspecified site

  • M67.911—

    Unspecified disorder of synovium and tendon, right shoulder

  • M67.912—

    Unspecified disorder of synovium and tendon, left shoulder

  • M67.919—

    Unspecified disorder of synovium and tendon, unspecified shoulder

  • M67.921—

    Unspecified disorder of synovium and tendon, right upper arm

  • M67.922—

    Unspecified disorder of synovium and tendon, left upper arm

  • M67.929—

    Unspecified disorder of synovium and tendon, unspecified upper arm

  • M67.931—

    Unspecified disorder of synovium and tendon, right forearm

  • M67.932—

    Unspecified disorder of synovium and tendon, left forearm

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