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)
Internal Codes
  • M92.523

    Juvenile osteochondrosis of tibia tubercle, bilateral

  • M92.529

    Juvenile osteochondrosis of tibia tubercle, unspecified leg

  • M92.59

    Other juvenile osteochondrosis of tibia and fibula

  • M92.591

    Other juvenile osteochondrosis of tibia and fibula, right leg

  • M92.592

    Other juvenile osteochondrosis of tibia and fibula, left leg

  • M92.593

    Other juvenile osteochondrosis of tibia and fibula, bilateral

  • M92.599

    Other juvenile osteochondrosis of tibia and fibula, unspecified leg

  • M92.6

    Juvenile osteochondrosis of tarsus

  • M92.60

    Juvenile osteochondrosis of tarsus, unspecified ankle

  • M92.61

    Juvenile osteochondrosis of tarsus, right ankle

  • M92.62

    Juvenile osteochondrosis of tarsus, left ankle

  • M92.7

    Juvenile osteochondrosis of metatarsus

  • M92.70

    Juvenile osteochondrosis of metatarsus, unspecified foot

  • M92.71

    Juvenile osteochondrosis of metatarsus, right foot

  • M92.72

    Juvenile osteochondrosis of metatarsus, left foot

  • M92.8

    Other specified juvenile osteochondrosis

  • M92.9

    Juvenile osteochondrosis, unspecified

  • M93

    Other osteochondropathies

  • M93.0

    Slipped upper femoral epiphysis (nontraumatic)

  • M93.00

    Unspecified slipped upper femoral epiphysis (nontraumatic)

  • M93.001

    Unspecified slipped upper femoral epiphysis (nontraumatic), right hip

  • M93.002

    Unspecified slipped upper femoral epiphysis (nontraumatic), left hip

  • M93.003

    Unspecified slipped upper femoral epiphysis (nontraumatic), unspecified hip

  • M93.004

    Unspecified slipped upper femoral epiphysis (nontraumatic), bilateral hips

  • M93.01

    Acute slipped upper femoral epiphysis, stable (nontraumatic)

  • M93.011

    Acute slipped upper femoral epiphysis, stable (nontraumatic), right hip

  • M93.012

    Acute slipped upper femoral epiphysis, stable (nontraumatic), left hip

  • M93.013

    Acute slipped upper femoral epiphysis, stable (nontraumatic), unspecified hip

  • M93.014

    Acute slipped upper femoral epiphysis, stable (nontraumatic), bilateral hips

  • M93.02

    Chronic slipped upper femoral epiphysis, stable (nontraumatic)

  • M93.021

    Chronic slipped upper femoral epiphysis, stable (nontraumatic), right hip

  • M93.022

    Chronic slipped upper femoral epiphysis, stable (nontraumatic), left hip

  • M93.023

    Chronic slipped upper femoral epiphysis, stable (nontraumatic), unspecified hip

  • M93.024

    Chronic slipped upper femoral epiphysis, stable (nontraumatic), bilateral hips

  • M93.03

    Acute on chronic slipped upper femoral epiphysis, stable (nontraumatic)

  • M93.031

    Acute on chronic slipped upper femoral epiphysis, stable (nontraumatic), right hip

  • M93.032

    Acute on chronic slipped upper femoral epiphysis, stable (nontraumatic), left hip

  • M93.033

    Acute on chronic slipped upper femoral epiphysis, stable (nontraumatic), unspecified hip

  • M93.034

    Acute on chronic slipped upper femoral epiphysis, stable (nontraumatic), bilateral hips

  • M93.04

    Acute slipped upper femoral epiphysis, unstable (nontraumatic)

  • M93.041

    Acute slipped upper femoral epiphysis, unstable (nontraumatic), right hip

  • M93.042

    Acute slipped upper femoral epiphysis, unstable (nontraumatic), left hip

  • M93.043

    Acute slipped upper femoral epiphysis, unstable (nontraumatic), unspecified hip

  • M93.044

    Acute slipped upper femoral epiphysis, unstable (nontraumatic), bilateral hips

  • M93.05

    Acute on chronic slipped upper femoral epiphysis, unstable (nontraumatic)

  • M93.051

    Acute on chronic slipped upper femoral epiphysis, unstable (nontraumatic), right hip

  • M93.052

    Acute on chronic slipped upper femoral epiphysis, unstable (nontraumatic), left hip

  • M93.053

    Acute on chronic slipped upper femoral epiphysis, unstable (nontraumatic), unspecified hip

  • M93.054

    Acute on chronic slipped upper femoral epiphysis, unstable (nontraumatic), bilateral hips

  • M93.06

    Acute slipped upper femoral epiphysis, unspecified stability (nontraumatic)

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