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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  • M89.432—

    Other hypertrophic osteoarthropathy, left forearm

  • M89.439—

    Other hypertrophic osteoarthropathy, unspecified forearm

  • M89.44—

    Other hypertrophic osteoarthropathy, hand

  • M89.441—

    Other hypertrophic osteoarthropathy, right hand

  • M89.442—

    Other hypertrophic osteoarthropathy, left hand

  • M89.449—

    Other hypertrophic osteoarthropathy, unspecified hand

  • M89.45—

    Other hypertrophic osteoarthropathy, thigh

  • M89.451—

    Other hypertrophic osteoarthropathy, right thigh

  • M89.452—

    Other hypertrophic osteoarthropathy, left thigh

  • M89.459—

    Other hypertrophic osteoarthropathy, unspecified thigh

  • M89.46—

    Other hypertrophic osteoarthropathy, lower leg

  • M89.461—

    Other hypertrophic osteoarthropathy, right lower leg

  • M89.462—

    Other hypertrophic osteoarthropathy, left lower leg

  • M89.469—

    Other hypertrophic osteoarthropathy, unspecified lower leg

  • M89.47—

    Other hypertrophic osteoarthropathy, ankle and foot

  • M89.471—

    Other hypertrophic osteoarthropathy, right ankle and foot

  • M89.472—

    Other hypertrophic osteoarthropathy, left ankle and foot

  • M89.479—

    Other hypertrophic osteoarthropathy, unspecified ankle and foot

  • M89.48—

    Other hypertrophic osteoarthropathy, other site

  • M89.49—

    Other hypertrophic osteoarthropathy, multiple sites

  • M89.5—

    Osteolysis

  • M89.50—

    Osteolysis, unspecified site

  • M89.51—

    Osteolysis, shoulder

  • M89.511—

    Osteolysis, right shoulder

  • M89.512—

    Osteolysis, left shoulder

  • M89.519—

    Osteolysis, unspecified shoulder

  • M89.52—

    Osteolysis, upper arm

  • M89.521—

    Osteolysis, right upper arm

  • M89.522—

    Osteolysis, left upper arm

  • M89.529—

    Osteolysis, unspecified upper arm

  • M89.53—

    Osteolysis, forearm

  • M89.531—

    Osteolysis, right forearm

  • M89.532—

    Osteolysis, left forearm

  • M89.539—

    Osteolysis, unspecified forearm

  • M89.54—

    Osteolysis, hand

  • M89.541—

    Osteolysis, right hand

  • M89.542—

    Osteolysis, left hand

  • M89.549—

    Osteolysis, unspecified hand

  • M89.55—

    Osteolysis, thigh

  • M89.551—

    Osteolysis, right thigh

  • M89.552—

    Osteolysis, left thigh

  • M89.559—

    Osteolysis, unspecified thigh

  • M89.56—

    Osteolysis, lower leg

  • M89.561—

    Osteolysis, right lower leg

  • M89.562—

    Osteolysis, left lower leg

  • M89.569—

    Osteolysis, unspecified lower leg

  • M89.57—

    Osteolysis, ankle and foot

  • M89.571—

    Osteolysis, right ankle and foot

  • M89.572—

    Osteolysis, left ankle and foot

  • M89.579—

    Osteolysis, unspecified ankle and foot

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