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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  • M02.26—

    Postimmunization arthropathy, knee

  • M02.261—

    Postimmunization arthropathy, right knee

  • M02.262—

    Postimmunization arthropathy, left knee

  • M02.269—

    Postimmunization arthropathy, unspecified knee

  • M02.27—

    Postimmunization arthropathy, ankle and foot

  • M02.271—

    Postimmunization arthropathy, right ankle and foot

  • M02.272—

    Postimmunization arthropathy, left ankle and foot

  • M02.279—

    Postimmunization arthropathy, unspecified ankle and foot

  • M02.28—

    Postimmunization arthropathy, vertebrae

  • M02.29—

    Postimmunization arthropathy, multiple sites

  • M02.3—

    Reiter's disease

  • M02.30—

    Reiter's disease, unspecified site

  • M02.31—

    Reiter's disease, shoulder

  • M02.311—

    Reiter's disease, right shoulder

  • M02.312—

    Reiter's disease, left shoulder

  • M02.319—

    Reiter's disease, unspecified shoulder

  • M02.32—

    Reiter's disease, elbow

  • M02.321—

    Reiter's disease, right elbow

  • M02.322—

    Reiter's disease, left elbow

  • M02.329—

    Reiter's disease, unspecified elbow

  • M02.33—

    Reiter's disease, wrist

  • M02.331—

    Reiter's disease, right wrist

  • M02.332—

    Reiter's disease, left wrist

  • M02.339—

    Reiter's disease, unspecified wrist

  • M02.34—

    Reiter's disease, hand

  • M02.341—

    Reiter's disease, right hand

  • M02.342—

    Reiter's disease, left hand

  • M02.349—

    Reiter's disease, unspecified hand

  • M02.35—

    Reiter's disease, hip

  • M02.351—

    Reiter's disease, right hip

  • M02.352—

    Reiter's disease, left hip

  • M02.359—

    Reiter's disease, unspecified hip

  • M02.36—

    Reiter's disease, knee

  • M02.361—

    Reiter's disease, right knee

  • M02.362—

    Reiter's disease, left knee

  • M02.369—

    Reiter's disease, unspecified knee

  • M02.37—

    Reiter's disease, ankle and foot

  • M02.371—

    Reiter's disease, right ankle and foot

  • M02.372—

    Reiter's disease, left ankle and foot

  • M02.379—

    Reiter's disease, unspecified ankle and foot

  • M02.38—

    Reiter's disease, vertebrae

  • M02.39—

    Reiter's disease, multiple sites

  • M02.8—

    Other reactive arthropathies

  • M02.80—

    Other reactive arthropathies, unspecified site

  • M02.81—

    Other reactive arthropathies, shoulder

  • M02.811—

    Other reactive arthropathies, right shoulder

  • M02.812—

    Other reactive arthropathies, left shoulder

  • M02.819—

    Other reactive arthropathies, unspecified shoulder

  • M02.82—

    Other reactive arthropathies, elbow

  • M02.821—

    Other reactive arthropathies, right elbow

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