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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  • M24.661—

    Ankylosis, right knee

  • M24.662—

    Ankylosis, left knee

  • M24.669—

    Ankylosis, unspecified knee

  • M24.67—

    Ankylosis, ankle and foot

  • M24.671—

    Ankylosis, right ankle

  • M24.672—

    Ankylosis, left ankle

  • M24.673—

    Ankylosis, unspecified ankle

  • M24.674—

    Ankylosis, right foot

  • M24.675—

    Ankylosis, left foot

  • M24.676—

    Ankylosis, unspecified foot

  • M24.69—

    Ankylosis, other specified joint

  • M24.7—

    Protrusio acetabuli

  • M24.8—

    Other specific joint derangements, not elsewhere classified

  • M24.80—

    Other specific joint derangements of unspecified joint, not elsewhere classified

  • M24.81—

    Other specific joint derangements of shoulder, not elsewhere classified

  • M24.811—

    Other specific joint derangements of right shoulder, not elsewhere classified

  • M24.812—

    Other specific joint derangements of left shoulder, not elsewhere classified

  • M24.819—

    Other specific joint derangements of unspecified shoulder, not elsewhere classified

  • M24.82—

    Other specific joint derangements of elbow, not elsewhere classified

  • M24.821—

    Other specific joint derangements of right elbow, not elsewhere classified

  • M24.822—

    Other specific joint derangements of left elbow, not elsewhere classified

  • M24.829—

    Other specific joint derangements of unspecified elbow, not elsewhere classified

  • M24.83—

    Other specific joint derangements of wrist, not elsewhere classified

  • M24.831—

    Other specific joint derangements of right wrist, not elsewhere classified

  • M24.832—

    Other specific joint derangements of left wrist, not elsewhere classified

  • M24.839—

    Other specific joint derangements of unspecified wrist, not elsewhere classified

  • M24.84—

    Other specific joint derangements of hand, not elsewhere classified

  • M24.841—

    Other specific joint derangements of right hand, not elsewhere classified

  • M24.842—

    Other specific joint derangements of left hand, not elsewhere classified

  • M24.849—

    Other specific joint derangements of unspecified hand, not elsewhere classified

  • M24.85—

    Other specific joint derangements of hip, not elsewhere classified

  • M24.851—

    Other specific joint derangements of right hip, not elsewhere classified

  • M24.852—

    Other specific joint derangements of left hip, not elsewhere classified

  • M24.859—

    Other specific joint derangements of unspecified hip, not elsewhere classified

  • M24.87—

    Other specific joint derangements of ankle and foot, not elsewhere classified

  • M24.871—

    Other specific joint derangements of right ankle, not elsewhere classified

  • M24.872—

    Other specific joint derangements of left ankle, not elsewhere classified

  • M24.873—

    Other specific joint derangements of unspecified ankle, not elsewhere classified

  • M24.874—

    Other specific joint derangements of right foot, not elsewhere classified

  • M24.875—

    Other specific joint derangements left foot, not elsewhere classified

  • M24.876—

    Other specific joint derangements of unspecified foot, not elsewhere classified

  • M24.89—

    Other specific joint derangement of other specified joint, not elsewhere classified

  • M24.9—

    Joint derangement, unspecified

  • M25—

    Other joint disorder, not elsewhere classified

  • M25.0—

    Hemarthrosis

  • M25.00—

    Hemarthrosis, unspecified joint

  • M25.01—

    Hemarthrosis, shoulder

  • M25.011—

    Hemarthrosis, right shoulder

  • M25.012—

    Hemarthrosis, left shoulder

  • M25.019—

    Hemarthrosis, unspecified shoulder

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