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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  • M94.219—

    Chondromalacia, unspecified shoulder

  • M94.221—

    Chondromalacia, right elbow

  • M94.222—

    Chondromalacia, left elbow

  • M94.229—

    Chondromalacia, unspecified elbow

  • M94.231—

    Chondromalacia, right wrist

  • M94.232—

    Chondromalacia, left wrist

  • M94.239—

    Chondromalacia, unspecified wrist

  • M94.241—

    Chondromalacia, joints of right hand

  • M94.242—

    Chondromalacia, joints of left hand

  • M94.249—

    Chondromalacia, joints of unspecified hand

  • M94.251—

    Chondromalacia, right hip

  • M94.252—

    Chondromalacia, left hip

  • M94.259—

    Chondromalacia, unspecified hip

  • M94.261—

    Chondromalacia, right knee

  • M94.262—

    Chondromalacia, left knee

  • M94.269—

    Chondromalacia, unspecified knee

  • 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

  • M94.351—

    Chondrolysis, right hip

  • M94.352—

    Chondrolysis, left hip

  • M94.359—

    Chondrolysis, unspecified hip

  • M94.8X0—

    Other specified disorders of cartilage, multiple sites

  • M94.8X1—

    Other specified disorders of cartilage, shoulder

  • M94.8X2—

    Other specified disorders of cartilage, upper arm

  • M94.8X3—

    Other specified disorders of cartilage, forearm

  • M94.8X4—

    Other specified disorders of cartilage, hand

  • M94.8X5—

    Other specified disorders of cartilage, thigh

  • M94.8X6—

    Other specified disorders of cartilage, lower leg

  • M94.8X7—

    Other specified disorders of cartilage, ankle and foot

  • M94.8X8—

    Other specified disorders of cartilage, other site

  • M94.8X9—

    Other specified disorders of cartilage, unspecified sites

  • M94.9—

    Disorder of cartilage, unspecified

  • M95.0—

    Acquired deformity of nose

  • M95.10—

    Cauliflower ear, unspecified ear

  • M95.11—

    Cauliflower ear, right ear

  • M95.12—

    Cauliflower ear, left ear

  • M95.2—

    Other acquired deformity of head

  • M95.3—

    Acquired deformity of neck

  • M95.4—

    Acquired deformity of chest and rib

  • M95.5—

    Acquired deformity of pelvis

  • M95.8—

    Other specified acquired deformities of musculoskeletal system

  • M95.9—

    Acquired deformity of musculoskeletal system, unspecified

  • M96.0—

    Pseudarthrosis after fusion or arthrodesis

  • M96.1—

    Postlaminectomy syndrome, not elsewhere classified

  • M96.2—

    Postradiation kyphosis

  • M96.3—

    Postlaminectomy kyphosis

  • M96.4—

    Postsurgical lordosis

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