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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  • M93.97—

    Osteochondropathy, unspecified of ankle and foot

  • M93.971—

    Osteochondropathy, unspecified, right ankle and foot

  • M93.972—

    Osteochondropathy, unspecified, left ankle and foot

  • M93.979—

    Osteochondropathy, unspecified, unspecified ankle and foot

  • M93.98—

    Osteochondropathy, unspecified other

  • M93.99—

    Osteochondropathy, unspecified multiple sites

  • M94—

    Other disorders of cartilage

  • M94.0—

    Chondrocostal junction syndrome [Tietze]

  • M94.1—

    Relapsing polychondritis

  • M94.2—

    Chondromalacia

  • M94.20—

    Chondromalacia, unspecified site

  • M94.21—

    Chondromalacia, shoulder

  • M94.211—

    Chondromalacia, right shoulder

  • M94.212—

    Chondromalacia, left shoulder

  • M94.219—

    Chondromalacia, unspecified shoulder

  • M94.22—

    Chondromalacia, elbow

  • M94.221—

    Chondromalacia, right elbow

  • M94.222—

    Chondromalacia, left elbow

  • M94.229—

    Chondromalacia, unspecified elbow

  • M94.23—

    Chondromalacia, wrist

  • M94.231—

    Chondromalacia, right wrist

  • M94.232—

    Chondromalacia, left wrist

  • M94.239—

    Chondromalacia, unspecified wrist

  • M94.24—

    Chondromalacia, joints of hand

  • M94.241—

    Chondromalacia, joints of right hand

  • M94.242—

    Chondromalacia, joints of left hand

  • M94.249—

    Chondromalacia, joints of unspecified hand

  • M94.25—

    Chondromalacia, hip

  • M94.251—

    Chondromalacia, right hip

  • M94.252—

    Chondromalacia, left hip

  • M94.259—

    Chondromalacia, unspecified hip

  • M94.26—

    Chondromalacia, knee

  • M94.261—

    Chondromalacia, right knee

  • M94.262—

    Chondromalacia, left knee

  • M94.269—

    Chondromalacia, unspecified knee

  • M94.27—

    Chondromalacia, ankle and joints of foot

  • M94.271—

    Chondromalacia, right ankle and joints of right foot

  • M94.272—

    Chondromalacia, left ankle and joints of left foot

  • M94.279—

    Chondromalacia, unspecified ankle and joints of foot

  • M94.28—

    Chondromalacia, other site

  • M94.29—

    Chondromalacia, multiple sites

  • M94.3—

    Chondrolysis

  • M94.35—

    Chondrolysis, hip

  • M94.351—

    Chondrolysis, right hip

  • M94.352—

    Chondrolysis, left hip

  • M94.359—

    Chondrolysis, unspecified hip

  • M94.8—

    Other specified disorders of cartilage

  • M94.8X—

    Other specified disorders of cartilage

  • M94.8X0—

    Other specified disorders of cartilage, multiple sites

  • M94.8X1—

    Other specified disorders of cartilage, shoulder

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