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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  • M12.03—

    Chronic postrheumatic arthropathy [Jaccoud], wrist

  • M12.031—

    Chronic postrheumatic arthropathy [Jaccoud], right wrist

  • M12.032—

    Chronic postrheumatic arthropathy [Jaccoud], left wrist

  • M12.039—

    Chronic postrheumatic arthropathy [Jaccoud], unspecified wrist

  • M12.04—

    Chronic postrheumatic arthropathy [Jaccoud], hand

  • M12.041—

    Chronic postrheumatic arthropathy [Jaccoud], right hand

  • M12.042—

    Chronic postrheumatic arthropathy [Jaccoud], left hand

  • M12.049—

    Chronic postrheumatic arthropathy [Jaccoud], unspecified hand

  • M12.05—

    Chronic postrheumatic arthropathy [Jaccoud], hip

  • M12.051—

    Chronic postrheumatic arthropathy [Jaccoud], right hip

  • M12.052—

    Chronic postrheumatic arthropathy [Jaccoud], left hip

  • M12.059—

    Chronic postrheumatic arthropathy [Jaccoud], unspecified hip

  • M12.06—

    Chronic postrheumatic arthropathy [Jaccoud], knee

  • M12.061—

    Chronic postrheumatic arthropathy [Jaccoud], right knee

  • M12.062—

    Chronic postrheumatic arthropathy [Jaccoud], left knee

  • M12.069—

    Chronic postrheumatic arthropathy [Jaccoud], unspecified knee

  • M12.07—

    Chronic postrheumatic arthropathy [Jaccoud], ankle and foot

  • M12.071—

    Chronic postrheumatic arthropathy [Jaccoud], right ankle and foot

  • M12.072—

    Chronic postrheumatic arthropathy [Jaccoud], left ankle and foot

  • M12.079—

    Chronic postrheumatic arthropathy [Jaccoud], unspecified ankle and foot

  • M12.08—

    Chronic postrheumatic arthropathy [Jaccoud], other specified site

  • M12.09—

    Chronic postrheumatic arthropathy [Jaccoud], multiple sites

  • M12.1—

    Kaschin-Beck disease

  • M12.10—

    Kaschin-Beck disease, unspecified site

  • M12.11—

    Kaschin-Beck disease, shoulder

  • M12.111—

    Kaschin-Beck disease, right shoulder

  • M12.112—

    Kaschin-Beck disease, left shoulder

  • M12.119—

    Kaschin-Beck disease, unspecified shoulder

  • M12.12—

    Kaschin-Beck disease, elbow

  • M12.121—

    Kaschin-Beck disease, right elbow

  • M12.122—

    Kaschin-Beck disease, left elbow

  • M12.129—

    Kaschin-Beck disease, unspecified elbow

  • M12.13—

    Kaschin-Beck disease, wrist

  • M12.131—

    Kaschin-Beck disease, right wrist

  • M12.132—

    Kaschin-Beck disease, left wrist

  • M12.139—

    Kaschin-Beck disease, unspecified wrist

  • M12.14—

    Kaschin-Beck disease, hand

  • M12.141—

    Kaschin-Beck disease, right hand

  • M12.142—

    Kaschin-Beck disease, left hand

  • M12.149—

    Kaschin-Beck disease, unspecified hand

  • M12.15—

    Kaschin-Beck disease, hip

  • M12.151—

    Kaschin-Beck disease, right hip

  • M12.152—

    Kaschin-Beck disease, left hip

  • M12.159—

    Kaschin-Beck disease, unspecified hip

  • M12.16—

    Kaschin-Beck disease, knee

  • M12.161—

    Kaschin-Beck disease, right knee

  • M12.162—

    Kaschin-Beck disease, left knee

  • M12.169—

    Kaschin-Beck disease, unspecified knee

  • M12.17—

    Kaschin-Beck disease, ankle and foot

  • M12.171—

    Kaschin-Beck disease, right ankle and foot

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