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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  • M02.822—

    Other reactive arthropathies, left elbow

  • M02.829—

    Other reactive arthropathies, unspecified elbow

  • M02.83—

    Other reactive arthropathies, wrist

  • M02.831—

    Other reactive arthropathies, right wrist

  • M02.832—

    Other reactive arthropathies, left wrist

  • M02.839—

    Other reactive arthropathies, unspecified wrist

  • M02.84—

    Other reactive arthropathies, hand

  • M02.841—

    Other reactive arthropathies, right hand

  • M02.842—

    Other reactive arthropathies, left hand

  • M02.849—

    Other reactive arthropathies, unspecified hand

  • M02.85—

    Other reactive arthropathies, hip

  • M02.851—

    Other reactive arthropathies, right hip

  • M02.852—

    Other reactive arthropathies, left hip

  • M02.859—

    Other reactive arthropathies, unspecified hip

  • M02.86—

    Other reactive arthropathies, knee

  • M02.861—

    Other reactive arthropathies, right knee

  • M02.862—

    Other reactive arthropathies, left knee

  • M02.869—

    Other reactive arthropathies, unspecified knee

  • M02.87—

    Other reactive arthropathies, ankle and foot

  • M02.871—

    Other reactive arthropathies, right ankle and foot

  • M02.872—

    Other reactive arthropathies, left ankle and foot

  • M02.879—

    Other reactive arthropathies, unspecified ankle and foot

  • M02.88—

    Other reactive arthropathies, vertebrae

  • M02.89—

    Other reactive arthropathies, multiple sites

  • M02.9—

    Reactive arthropathy, unspecified

  • M04—

    Autoinflammatory syndromes

  • M04.1—

    Periodic fever syndromes

  • M04.2—

    Cryopyrin-associated periodic syndromes

  • M04.8—

    Other autoinflammatory syndromes

  • M04.9—

    Autoinflammatory syndrome, unspecified

  • M05—

    Rheumatoid arthritis with rheumatoid factor

  • M05.0—

    Felty's syndrome

  • M05.00—

    Felty's syndrome, unspecified site

  • M05.01—

    Felty's syndrome, shoulder

  • M05.011—

    Felty's syndrome, right shoulder

  • M05.012—

    Felty's syndrome, left shoulder

  • M05.019—

    Felty's syndrome, unspecified shoulder

  • M05.02—

    Felty's syndrome, elbow

  • M05.021—

    Felty's syndrome, right elbow

  • M05.022—

    Felty's syndrome, left elbow

  • M05.029—

    Felty's syndrome, unspecified elbow

  • M05.03—

    Felty's syndrome, wrist

  • M05.031—

    Felty's syndrome, right wrist

  • M05.032—

    Felty's syndrome, left wrist

  • M05.039—

    Felty's syndrome, unspecified wrist

  • M05.04—

    Felty's syndrome, hand

  • M05.041—

    Felty's syndrome, right hand

  • M05.042—

    Felty's syndrome, left hand

  • M05.049—

    Felty's syndrome, unspecified hand

  • M05.05—

    Felty's syndrome, hip

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