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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  • M90.811—

    Osteopathy in diseases classified elsewhere, right shoulder

  • M90.812—

    Osteopathy in diseases classified elsewhere, left shoulder

  • M90.819—

    Osteopathy in diseases classified elsewhere, unspecified shoulder

  • M90.821—

    Osteopathy in diseases classified elsewhere, right upper arm

  • M90.822—

    Osteopathy in diseases classified elsewhere, left upper arm

  • M90.829—

    Osteopathy in diseases classified elsewhere, unspecified upper arm

  • M90.831—

    Osteopathy in diseases classified elsewhere, right forearm

  • M90.832—

    Osteopathy in diseases classified elsewhere, left forearm

  • M90.839—

    Osteopathy in diseases classified elsewhere, unspecified forearm

  • M90.841—

    Osteopathy in diseases classified elsewhere, right hand

  • M90.842—

    Osteopathy in diseases classified elsewhere, left hand

  • M90.849—

    Osteopathy in diseases classified elsewhere, unspecified hand

  • M90.851—

    Osteopathy in diseases classified elsewhere, right thigh

  • M90.852—

    Osteopathy in diseases classified elsewhere, left thigh

  • M90.859—

    Osteopathy in diseases classified elsewhere, unspecified thigh

  • M90.861—

    Osteopathy in diseases classified elsewhere, right lower leg

  • M90.862—

    Osteopathy in diseases classified elsewhere, left lower leg

  • M90.869—

    Osteopathy in diseases classified elsewhere, unspecified lower leg

  • M90.871—

    Osteopathy in diseases classified elsewhere, right ankle and foot

  • M90.872—

    Osteopathy in diseases classified elsewhere, left ankle and foot

  • M90.879—

    Osteopathy in diseases classified elsewhere, unspecified ankle and foot

  • M90.88—

    Osteopathy in diseases classified elsewhere, other site

  • M90.89—

    Osteopathy in diseases classified elsewhere, multiple sites

  • M91.0—

    Juvenile osteochondrosis of pelvis

  • M91.10—

    Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], unspecified leg

  • M91.11—

    Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], right leg

  • M91.12—

    Juvenile osteochondrosis of head of femur [Legg-Calvé-Perthes], left leg

  • M91.20—

    Coxa plana, unspecified hip

  • M91.21—

    Coxa plana, right hip

  • M91.22—

    Coxa plana, left hip

  • M91.30—

    Pseudocoxalgia, unspecified hip

  • M91.31—

    Pseudocoxalgia, right hip

  • M91.32—

    Pseudocoxalgia, left hip

  • M91.40—

    Coxa magna, unspecified hip

  • M91.41—

    Coxa magna, right hip

  • M91.42—

    Coxa magna, left hip

  • M91.80—

    Other juvenile osteochondrosis of hip and pelvis, unspecified leg

  • M91.81—

    Other juvenile osteochondrosis of hip and pelvis, right leg

  • M91.82—

    Other juvenile osteochondrosis of hip and pelvis, left leg

  • M91.90—

    Juvenile osteochondrosis of hip and pelvis, unspecified, unspecified leg

  • M91.91—

    Juvenile osteochondrosis of hip and pelvis, unspecified, right leg

  • M91.92—

    Juvenile osteochondrosis of hip and pelvis, unspecified, left leg

  • M92.00—

    Juvenile osteochondrosis of humerus, unspecified arm

  • M92.01—

    Juvenile osteochondrosis of humerus, right arm

  • M92.02—

    Juvenile osteochondrosis of humerus, left arm

  • M92.10—

    Juvenile osteochondrosis of radius and ulna, unspecified arm

  • M92.11—

    Juvenile osteochondrosis of radius and ulna, right arm

  • M92.12—

    Juvenile osteochondrosis of radius and ulna, left arm

  • M92.201—

    Unspecified juvenile osteochondrosis, right hand

  • M92.202—

    Unspecified juvenile osteochondrosis, left hand

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