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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  • M08.4—

    Pauciarticular juvenile rheumatoid arthritis

  • M08.40—

    Pauciarticular juvenile rheumatoid arthritis, unspecified site

  • M08.41—

    Pauciarticular juvenile rheumatoid arthritis, shoulder

  • M08.411—

    Pauciarticular juvenile rheumatoid arthritis, right shoulder

  • M08.412—

    Pauciarticular juvenile rheumatoid arthritis, left shoulder

  • M08.419—

    Pauciarticular juvenile rheumatoid arthritis, unspecified shoulder

  • M08.42—

    Pauciarticular juvenile rheumatoid arthritis, elbow

  • M08.421—

    Pauciarticular juvenile rheumatoid arthritis, right elbow

  • M08.422—

    Pauciarticular juvenile rheumatoid arthritis, left elbow

  • M08.429—

    Pauciarticular juvenile rheumatoid arthritis, unspecified elbow

  • M08.43—

    Pauciarticular juvenile rheumatoid arthritis, wrist

  • M08.431—

    Pauciarticular juvenile rheumatoid arthritis, right wrist

  • M08.432—

    Pauciarticular juvenile rheumatoid arthritis, left wrist

  • M08.439—

    Pauciarticular juvenile rheumatoid arthritis, unspecified wrist

  • M08.44—

    Pauciarticular juvenile rheumatoid arthritis, hand

  • M08.441—

    Pauciarticular juvenile rheumatoid arthritis, right hand

  • M08.442—

    Pauciarticular juvenile rheumatoid arthritis, left hand

  • M08.449—

    Pauciarticular juvenile rheumatoid arthritis, unspecified hand

  • M08.45—

    Pauciarticular juvenile rheumatoid arthritis, hip

  • M08.451—

    Pauciarticular juvenile rheumatoid arthritis, right hip

  • M08.452—

    Pauciarticular juvenile rheumatoid arthritis, left hip

  • M08.459—

    Pauciarticular juvenile rheumatoid arthritis, unspecified hip

  • M08.46—

    Pauciarticular juvenile rheumatoid arthritis, knee

  • M08.461—

    Pauciarticular juvenile rheumatoid arthritis, right knee

  • M08.462—

    Pauciarticular juvenile rheumatoid arthritis, left knee

  • M08.469—

    Pauciarticular juvenile rheumatoid arthritis, unspecified knee

  • M08.47—

    Pauciarticular juvenile rheumatoid arthritis, ankle and foot

  • 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

  • M08.8—

    Other juvenile arthritis

  • M08.80—

    Other juvenile arthritis, unspecified site

  • M08.81—

    Other juvenile arthritis, shoulder

  • M08.811—

    Other juvenile arthritis, right shoulder

  • M08.812—

    Other juvenile arthritis, left shoulder

  • M08.819—

    Other juvenile arthritis, unspecified shoulder

  • M08.82—

    Other juvenile arthritis, elbow

  • M08.821—

    Other juvenile arthritis, right elbow

  • M08.822—

    Other juvenile arthritis, left elbow

  • M08.829—

    Other juvenile arthritis, unspecified elbow

  • M08.83—

    Other juvenile arthritis, wrist

  • M08.831—

    Other juvenile arthritis, right wrist

  • M08.832—

    Other juvenile arthritis, left wrist

  • M08.839—

    Other juvenile arthritis, unspecified wrist

  • M08.84—

    Other juvenile arthritis, hand

  • M08.841—

    Other juvenile arthritis, right hand

  • M08.842—

    Other juvenile arthritis, left hand

  • M08.849—

    Other juvenile arthritis, unspecified hand

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