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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  • M05.051—

    Felty's syndrome, right hip

  • M05.052—

    Felty's syndrome, left hip

  • M05.059—

    Felty's syndrome, unspecified hip

  • M05.06—

    Felty's syndrome, knee

  • M05.061—

    Felty's syndrome, right knee

  • M05.062—

    Felty's syndrome, left knee

  • M05.069—

    Felty's syndrome, unspecified knee

  • M05.07—

    Felty's syndrome, ankle and foot

  • M05.071—

    Felty's syndrome, right ankle and foot

  • M05.072—

    Felty's syndrome, left ankle and foot

  • M05.079—

    Felty's syndrome, unspecified ankle and foot

  • M05.09—

    Felty's syndrome, multiple sites

  • M05.1—

    Rheumatoid lung disease with rheumatoid arthritis

  • M05.10—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified site

  • M05.11—

    Rheumatoid lung disease with rheumatoid arthritis of shoulder

  • M05.111—

    Rheumatoid lung disease with rheumatoid arthritis of right shoulder

  • M05.112—

    Rheumatoid lung disease with rheumatoid arthritis of left shoulder

  • M05.119—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified shoulder

  • M05.12—

    Rheumatoid lung disease with rheumatoid arthritis of elbow

  • M05.121—

    Rheumatoid lung disease with rheumatoid arthritis of right elbow

  • M05.122—

    Rheumatoid lung disease with rheumatoid arthritis of left elbow

  • M05.129—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified elbow

  • M05.13—

    Rheumatoid lung disease with rheumatoid arthritis of wrist

  • M05.131—

    Rheumatoid lung disease with rheumatoid arthritis of right wrist

  • M05.132—

    Rheumatoid lung disease with rheumatoid arthritis of left wrist

  • M05.139—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified wrist

  • M05.14—

    Rheumatoid lung disease with rheumatoid arthritis of hand

  • M05.141—

    Rheumatoid lung disease with rheumatoid arthritis of right hand

  • M05.142—

    Rheumatoid lung disease with rheumatoid arthritis of left hand

  • M05.149—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified hand

  • M05.15—

    Rheumatoid lung disease with rheumatoid arthritis of hip

  • M05.151—

    Rheumatoid lung disease with rheumatoid arthritis of right hip

  • M05.152—

    Rheumatoid lung disease with rheumatoid arthritis of left hip

  • M05.159—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified hip

  • M05.16—

    Rheumatoid lung disease with rheumatoid arthritis of knee

  • M05.161—

    Rheumatoid lung disease with rheumatoid arthritis of right knee

  • M05.162—

    Rheumatoid lung disease with rheumatoid arthritis of left knee

  • M05.169—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified knee

  • M05.17—

    Rheumatoid lung disease with rheumatoid arthritis of ankle and foot

  • M05.171—

    Rheumatoid lung disease with rheumatoid arthritis of right ankle and foot

  • M05.172—

    Rheumatoid lung disease with rheumatoid arthritis of left ankle and foot

  • M05.179—

    Rheumatoid lung disease with rheumatoid arthritis of unspecified ankle and foot

  • M05.19—

    Rheumatoid lung disease with rheumatoid arthritis of multiple sites

  • M05.2—

    Rheumatoid vasculitis with rheumatoid arthritis

  • M05.20—

    Rheumatoid vasculitis with rheumatoid arthritis of unspecified site

  • M05.21—

    Rheumatoid vasculitis with rheumatoid arthritis of shoulder

  • M05.211—

    Rheumatoid vasculitis with rheumatoid arthritis of right shoulder

  • M05.212—

    Rheumatoid vasculitis with rheumatoid arthritis of left shoulder

  • M05.219—

    Rheumatoid vasculitis with rheumatoid arthritis of unspecified shoulder

  • M05.22—

    Rheumatoid vasculitis with rheumatoid arthritis of elbow

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