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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  • M05.54—

    Rheumatoid polyneuropathy with rheumatoid arthritis of hand

  • M05.541—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right hand

  • M05.542—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left hand

  • M05.549—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified hand

  • M05.55—

    Rheumatoid polyneuropathy with rheumatoid arthritis of hip

  • M05.551—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right hip

  • M05.552—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left hip

  • M05.559—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified hip

  • M05.56—

    Rheumatoid polyneuropathy with rheumatoid arthritis of knee

  • M05.561—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right knee

  • M05.562—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left knee

  • M05.569—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified knee

  • M05.57—

    Rheumatoid polyneuropathy with rheumatoid arthritis of ankle and foot

  • M05.571—

    Rheumatoid polyneuropathy with rheumatoid arthritis of right ankle and foot

  • M05.572—

    Rheumatoid polyneuropathy with rheumatoid arthritis of left ankle and foot

  • M05.579—

    Rheumatoid polyneuropathy with rheumatoid arthritis of unspecified ankle and foot

  • M05.59—

    Rheumatoid polyneuropathy with rheumatoid arthritis of multiple sites

  • M05.6—

    Rheumatoid arthritis with involvement of other organs and systems

  • M05.60—

    Rheumatoid arthritis of unspecified site with involvement of other organs and systems

  • M05.61—

    Rheumatoid arthritis of shoulder with involvement of other organs and systems

  • M05.611—

    Rheumatoid arthritis of right shoulder with involvement of other organs and systems

  • M05.612—

    Rheumatoid arthritis of left shoulder with involvement of other organs and systems

  • M05.619—

    Rheumatoid arthritis of unspecified shoulder with involvement of other organs and systems

  • M05.62—

    Rheumatoid arthritis of elbow with involvement of other organs and systems

  • M05.621—

    Rheumatoid arthritis of right elbow with involvement of other organs and systems

  • M05.622—

    Rheumatoid arthritis of left elbow with involvement of other organs and systems

  • M05.629—

    Rheumatoid arthritis of unspecified elbow with involvement of other organs and systems

  • M05.63—

    Rheumatoid arthritis of wrist with involvement of other organs and systems

  • M05.631—

    Rheumatoid arthritis of right wrist with involvement of other organs and systems

  • M05.632—

    Rheumatoid arthritis of left wrist with involvement of other organs and systems

  • M05.639—

    Rheumatoid arthritis of unspecified wrist with involvement of other organs and systems

  • M05.64—

    Rheumatoid arthritis of hand with involvement of other organs and systems

  • M05.641—

    Rheumatoid arthritis of right hand with involvement of other organs and systems

  • M05.642—

    Rheumatoid arthritis of left hand with involvement of other organs and systems

  • M05.649—

    Rheumatoid arthritis of unspecified hand with involvement of other organs and systems

  • M05.65—

    Rheumatoid arthritis of hip with involvement of other organs and systems

  • M05.651—

    Rheumatoid arthritis of right hip with involvement of other organs and systems

  • M05.652—

    Rheumatoid arthritis of left hip with involvement of other organs and systems

  • M05.659—

    Rheumatoid arthritis of unspecified hip with involvement of other organs and systems

  • M05.66—

    Rheumatoid arthritis of knee with involvement of other organs and systems

  • M05.661—

    Rheumatoid arthritis of right knee with involvement of other organs and systems

  • M05.662—

    Rheumatoid arthritis of left knee with involvement of other organs and systems

  • M05.669—

    Rheumatoid arthritis of unspecified knee with involvement of other organs and systems

  • M05.67—

    Rheumatoid arthritis of ankle and foot with involvement of other organs and systems

  • M05.671—

    Rheumatoid arthritis of right ankle and foot with involvement of other organs and systems

  • M05.672—

    Rheumatoid arthritis of left ankle and foot with involvement of other organs and systems

  • M05.679—

    Rheumatoid arthritis of unspecified ankle and foot with involvement of other organs and systems

  • M05.69—

    Rheumatoid arthritis of multiple sites with involvement of other organs and systems

  • M05.7—

    Rheumatoid arthritis with rheumatoid factor without organ or systems involvement

  • M05.70—

    Rheumatoid arthritis with rheumatoid factor of unspecified site without organ or systems involvement

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