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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  • M05.37—

    Rheumatoid heart disease with rheumatoid arthritis of ankle and foot

  • M05.371—

    Rheumatoid heart disease with rheumatoid arthritis of right ankle and foot

  • M05.372—

    Rheumatoid heart disease with rheumatoid arthritis of left ankle and foot

  • M05.379—

    Rheumatoid heart disease with rheumatoid arthritis of unspecified ankle and foot

  • M05.39—

    Rheumatoid heart disease with rheumatoid arthritis of multiple sites

  • M05.4—

    Rheumatoid myopathy with rheumatoid arthritis

  • M05.40—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified site

  • M05.41—

    Rheumatoid myopathy with rheumatoid arthritis of shoulder

  • M05.411—

    Rheumatoid myopathy with rheumatoid arthritis of right shoulder

  • M05.412—

    Rheumatoid myopathy with rheumatoid arthritis of left shoulder

  • M05.419—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified shoulder

  • M05.42—

    Rheumatoid myopathy with rheumatoid arthritis of elbow

  • M05.421—

    Rheumatoid myopathy with rheumatoid arthritis of right elbow

  • M05.422—

    Rheumatoid myopathy with rheumatoid arthritis of left elbow

  • M05.429—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified elbow

  • M05.43—

    Rheumatoid myopathy with rheumatoid arthritis of wrist

  • M05.431—

    Rheumatoid myopathy with rheumatoid arthritis of right wrist

  • M05.432—

    Rheumatoid myopathy with rheumatoid arthritis of left wrist

  • M05.439—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified wrist

  • M05.44—

    Rheumatoid myopathy with rheumatoid arthritis of hand

  • M05.441—

    Rheumatoid myopathy with rheumatoid arthritis of right hand

  • M05.442—

    Rheumatoid myopathy with rheumatoid arthritis of left hand

  • M05.449—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified hand

  • M05.45—

    Rheumatoid myopathy with rheumatoid arthritis of hip

  • M05.451—

    Rheumatoid myopathy with rheumatoid arthritis of right hip

  • M05.452—

    Rheumatoid myopathy with rheumatoid arthritis of left hip

  • M05.459—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified hip

  • M05.46—

    Rheumatoid myopathy with rheumatoid arthritis of knee

  • M05.461—

    Rheumatoid myopathy with rheumatoid arthritis of right knee

  • M05.462—

    Rheumatoid myopathy with rheumatoid arthritis of left knee

  • M05.469—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified knee

  • M05.47—

    Rheumatoid myopathy with rheumatoid arthritis of ankle and foot

  • M05.471—

    Rheumatoid myopathy with rheumatoid arthritis of right ankle and foot

  • M05.472—

    Rheumatoid myopathy with rheumatoid arthritis of left ankle and foot

  • M05.479—

    Rheumatoid myopathy with rheumatoid arthritis of unspecified ankle and foot

  • M05.49—

    Rheumatoid myopathy with rheumatoid arthritis of multiple sites

  • M05.5—

    Rheumatoid polyneuropathy with rheumatoid arthritis

  • M05.50—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified site

  • M05.51—

    Rheumatoid polyneuropathy with rheumatoid arthritis of shoulder

  • M05.511—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right shoulder

  • M05.512—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left shoulder

  • M05.519—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified shoulder

  • M05.52—

    Rheumatoid polyneuropathy with rheumatoid arthritis of elbow

  • M05.521—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right elbow

  • M05.522—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left elbow

  • M05.529—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified elbow

  • M05.53—

    Rheumatoid polyneuropathy with rheumatoid arthritis of wrist

  • M05.531—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right wrist

  • M05.532—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left wrist

  • M05.539—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified wrist

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