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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  • M1A.271—

    Drug-induced chronic gout, right ankle and foot

  • M1A.2710—

    Drug-induced chronic gout, right ankle and foot, without tophus (tophi)

  • M1A.2711—

    Drug-induced chronic gout, right ankle and foot, with tophus (tophi)

  • M1A.272—

    Drug-induced chronic gout, left ankle and foot

  • M1A.2720—

    Drug-induced chronic gout, left ankle and foot, without tophus (tophi)

  • M1A.2721—

    Drug-induced chronic gout, left ankle and foot, with tophus (tophi)

  • M1A.279—

    Drug-induced chronic gout, unspecified ankle and foot

  • M1A.2790—

    Drug-induced chronic gout, unspecified ankle and foot, without tophus (tophi)

  • M1A.2791—

    Drug-induced chronic gout, unspecified ankle and foot, with tophus (tophi)

  • M1A.28—

    Drug-induced chronic gout, vertebrae

  • M1A.28X0—

    Drug-induced chronic gout, vertebrae, without tophus (tophi)

  • M1A.28X1—

    Drug-induced chronic gout, vertebrae, with tophus (tophi)

  • M1A.29—

    Drug-induced chronic gout, multiple sites

  • M1A.29X0—

    Drug-induced chronic gout, multiple sites, without tophus (tophi)

  • M1A.29X1—

    Drug-induced chronic gout, multiple sites, with tophus (tophi)

  • M1A.3—

    Chronic gout due to renal impairment

  • M1A.30—

    Chronic gout due to renal impairment, unspecified site

  • M1A.30X0—

    Chronic gout due to renal impairment, unspecified site, without tophus (tophi)

  • M1A.30X1—

    Chronic gout due to renal impairment, unspecified site, with tophus (tophi)

  • M1A.31—

    Chronic gout due to renal impairment, shoulder

  • M1A.311—

    Chronic gout due to renal impairment, right shoulder

  • M1A.3110—

    Chronic gout due to renal impairment, right shoulder, without tophus (tophi)

  • M1A.3111—

    Chronic gout due to renal impairment, right shoulder, with tophus (tophi)

  • M1A.312—

    Chronic gout due to renal impairment, left shoulder

  • M1A.3120—

    Chronic gout due to renal impairment, left shoulder, without tophus (tophi)

  • M1A.3121—

    Chronic gout due to renal impairment, left shoulder, with tophus (tophi)

  • M1A.319—

    Chronic gout due to renal impairment, unspecified shoulder

  • M1A.3190—

    Chronic gout due to renal impairment, unspecified shoulder, without tophus (tophi)

  • M1A.3191—

    Chronic gout due to renal impairment, unspecified shoulder, with tophus (tophi)

  • M1A.32—

    Chronic gout due to renal impairment, elbow

  • M1A.321—

    Chronic gout due to renal impairment, right elbow

  • M1A.3210—

    Chronic gout due to renal impairment, right elbow, without tophus (tophi)

  • M1A.3211—

    Chronic gout due to renal impairment, right elbow, with tophus (tophi)

  • M1A.322—

    Chronic gout due to renal impairment, left elbow

  • M1A.3220—

    Chronic gout due to renal impairment, left elbow, without tophus (tophi)

  • M1A.3221—

    Chronic gout due to renal impairment, left elbow, with tophus (tophi)

  • M1A.329—

    Chronic gout due to renal impairment, unspecified elbow

  • M1A.3290—

    Chronic gout due to renal impairment, unspecified elbow, without tophus (tophi)

  • M1A.3291—

    Chronic gout due to renal impairment, unspecified elbow, with tophus (tophi)

  • M1A.33—

    Chronic gout due to renal impairment, wrist

  • M1A.331—

    Chronic gout due to renal impairment, right wrist

  • M1A.3310—

    Chronic gout due to renal impairment, right wrist, without tophus (tophi)

  • M1A.3311—

    Chronic gout due to renal impairment, right wrist, with tophus (tophi)

  • M1A.332—

    Chronic gout due to renal impairment, left wrist

  • M1A.3320—

    Chronic gout due to renal impairment, left wrist, without tophus (tophi)

  • M1A.3321—

    Chronic gout due to renal impairment, left wrist, with tophus (tophi)

  • M1A.339—

    Chronic gout due to renal impairment, unspecified wrist

  • M1A.3390—

    Chronic gout due to renal impairment, unspecified wrist, without tophus (tophi)

  • M1A.3391—

    Chronic gout due to renal impairment, unspecified wrist, with tophus (tophi)

  • M1A.34—

    Chronic gout due to renal impairment, hand

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