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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  • M10.462—

    Other secondary gout, left knee

  • M10.469—

    Other secondary gout, unspecified knee

  • M10.47—

    Other secondary gout, ankle and foot

  • M10.471—

    Other secondary gout, right ankle and foot

  • M10.472—

    Other secondary gout, left ankle and foot

  • M10.479—

    Other secondary gout, unspecified ankle and foot

  • M10.48—

    Other secondary gout, vertebrae

  • M10.49—

    Other secondary gout, multiple sites

  • M10.9—

    Gout, unspecified

  • M11—

    Other crystal arthropathies

  • M11.0—

    Hydroxyapatite deposition disease

  • M11.00—

    Hydroxyapatite deposition disease, unspecified site

  • M11.01—

    Hydroxyapatite deposition disease, shoulder

  • M11.011—

    Hydroxyapatite deposition disease, right shoulder

  • M11.012—

    Hydroxyapatite deposition disease, left shoulder

  • M11.019—

    Hydroxyapatite deposition disease, unspecified shoulder

  • M11.02—

    Hydroxyapatite deposition disease, elbow

  • M11.021—

    Hydroxyapatite deposition disease, right elbow

  • M11.022—

    Hydroxyapatite deposition disease, left elbow

  • M11.029—

    Hydroxyapatite deposition disease, unspecified elbow

  • M11.03—

    Hydroxyapatite deposition disease, wrist

  • M11.031—

    Hydroxyapatite deposition disease, right wrist

  • M11.032—

    Hydroxyapatite deposition disease, left wrist

  • M11.039—

    Hydroxyapatite deposition disease, unspecified wrist

  • M11.04—

    Hydroxyapatite deposition disease, hand

  • M11.041—

    Hydroxyapatite deposition disease, right hand

  • M11.042—

    Hydroxyapatite deposition disease, left hand

  • M11.049—

    Hydroxyapatite deposition disease, unspecified hand

  • M11.05—

    Hydroxyapatite deposition disease, hip

  • M11.051—

    Hydroxyapatite deposition disease, right hip

  • M11.052—

    Hydroxyapatite deposition disease, left hip

  • M11.059—

    Hydroxyapatite deposition disease, unspecified hip

  • M11.06—

    Hydroxyapatite deposition disease, knee

  • M11.061—

    Hydroxyapatite deposition disease, right knee

  • M11.062—

    Hydroxyapatite deposition disease, left knee

  • M11.069—

    Hydroxyapatite deposition disease, unspecified knee

  • M11.07—

    Hydroxyapatite deposition disease, ankle and foot

  • M11.071—

    Hydroxyapatite deposition disease, right ankle and foot

  • M11.072—

    Hydroxyapatite deposition disease, left ankle and foot

  • M11.079—

    Hydroxyapatite deposition disease, unspecified ankle and foot

  • M11.08—

    Hydroxyapatite deposition disease, vertebrae

  • M11.09—

    Hydroxyapatite deposition disease, multiple sites

  • M11.1—

    Familial chondrocalcinosis

  • M11.10—

    Familial chondrocalcinosis, unspecified site

  • M11.11—

    Familial chondrocalcinosis, shoulder

  • M11.111—

    Familial chondrocalcinosis, right shoulder

  • M11.112—

    Familial chondrocalcinosis, left shoulder

  • M11.119—

    Familial chondrocalcinosis, unspecified shoulder

  • M11.12—

    Familial chondrocalcinosis, elbow

  • M11.121—

    Familial chondrocalcinosis, right elbow

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