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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  • M08.461—

    Pauciarticular juvenile rheumatoid arthritis, right knee

  • M08.462—

    Pauciarticular juvenile rheumatoid arthritis, left knee

  • M08.469—

    Pauciarticular juvenile rheumatoid arthritis, unspecified knee

  • M08.471—

    Pauciarticular juvenile rheumatoid arthritis, right ankle and foot

  • M08.472—

    Pauciarticular juvenile rheumatoid arthritis, left ankle and foot

  • M08.479—

    Pauciarticular juvenile rheumatoid arthritis, unspecified ankle and foot

  • M08.48—

    Pauciarticular juvenile rheumatoid arthritis, vertebrae

  • M08.4A—

    Pauciarticular juvenile rheumatoid arthritis, other specified site

  • M08.80—

    Other juvenile arthritis, unspecified site

  • M08.811—

    Other juvenile arthritis, right shoulder

  • M08.812—

    Other juvenile arthritis, left shoulder

  • M08.819—

    Other juvenile arthritis, unspecified shoulder

  • M08.821—

    Other juvenile arthritis, right elbow

  • M08.822—

    Other juvenile arthritis, left elbow

  • M08.829—

    Other juvenile arthritis, unspecified elbow

  • M08.831—

    Other juvenile arthritis, right wrist

  • M08.832—

    Other juvenile arthritis, left wrist

  • M08.839—

    Other juvenile arthritis, unspecified wrist

  • M08.841—

    Other juvenile arthritis, right hand

  • M08.842—

    Other juvenile arthritis, left hand

  • M08.849—

    Other juvenile arthritis, unspecified hand

  • M08.851—

    Other juvenile arthritis, right hip

  • M08.852—

    Other juvenile arthritis, left hip

  • M08.859—

    Other juvenile arthritis, unspecified hip

  • M08.861—

    Other juvenile arthritis, right knee

  • M08.862—

    Other juvenile arthritis, left knee

  • M08.869—

    Other juvenile arthritis, unspecified knee

  • M08.871—

    Other juvenile arthritis, right ankle and foot

  • M08.872—

    Other juvenile arthritis, left ankle and foot

  • M08.879—

    Other juvenile arthritis, unspecified ankle and foot

  • M08.88—

    Other juvenile arthritis, other specified site

  • M08.89—

    Other juvenile arthritis, multiple sites

  • M08.90—

    Juvenile arthritis, unspecified, unspecified site

  • M08.911—

    Juvenile arthritis, unspecified, right shoulder

  • M08.912—

    Juvenile arthritis, unspecified, left shoulder

  • M08.919—

    Juvenile arthritis, unspecified, unspecified shoulder

  • M08.921—

    Juvenile arthritis, unspecified, right elbow

  • M08.922—

    Juvenile arthritis, unspecified, left elbow

  • M08.929—

    Juvenile arthritis, unspecified, unspecified elbow

  • M08.931—

    Juvenile arthritis, unspecified, right wrist

  • M08.932—

    Juvenile arthritis, unspecified, left wrist

  • M08.939—

    Juvenile arthritis, unspecified, unspecified wrist

  • M08.941—

    Juvenile arthritis, unspecified, right hand

  • M08.942—

    Juvenile arthritis, unspecified, left hand

  • M08.949—

    Juvenile arthritis, unspecified, unspecified hand

  • M08.951—

    Juvenile arthritis, unspecified, right hip

  • M08.952—

    Juvenile arthritis, unspecified, left hip

  • M08.959—

    Juvenile arthritis, unspecified, unspecified hip

  • M08.961—

    Juvenile arthritis, unspecified, right knee

  • M08.962—

    Juvenile arthritis, unspecified, left knee

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