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.221—

    Drug-induced chronic gout, right elbow

  • M1A.2210—

    Drug-induced chronic gout, right elbow, without tophus (tophi)

  • M1A.2211—

    Drug-induced chronic gout, right elbow, with tophus (tophi)

  • M1A.222—

    Drug-induced chronic gout, left elbow

  • M1A.2220—

    Drug-induced chronic gout, left elbow, without tophus (tophi)

  • M1A.2221—

    Drug-induced chronic gout, left elbow, with tophus (tophi)

  • M1A.229—

    Drug-induced chronic gout, unspecified elbow

  • M1A.2290—

    Drug-induced chronic gout, unspecified elbow, without tophus (tophi)

  • M1A.2291—

    Drug-induced chronic gout, unspecified elbow, with tophus (tophi)

  • M1A.23—

    Drug-induced chronic gout, wrist

  • M1A.231—

    Drug-induced chronic gout, right wrist

  • M1A.2310—

    Drug-induced chronic gout, right wrist, without tophus (tophi)

  • M1A.2311—

    Drug-induced chronic gout, right wrist, with tophus (tophi)

  • M1A.232—

    Drug-induced chronic gout, left wrist

  • M1A.2320—

    Drug-induced chronic gout, left wrist, without tophus (tophi)

  • M1A.2321—

    Drug-induced chronic gout, left wrist, with tophus (tophi)

  • M1A.239—

    Drug-induced chronic gout, unspecified wrist

  • M1A.2390—

    Drug-induced chronic gout, unspecified wrist, without tophus (tophi)

  • M1A.2391—

    Drug-induced chronic gout, unspecified wrist, with tophus (tophi)

  • M1A.24—

    Drug-induced chronic gout, hand

  • M1A.241—

    Drug-induced chronic gout, right hand

  • M1A.2410—

    Drug-induced chronic gout, right hand, without tophus (tophi)

  • M1A.2411—

    Drug-induced chronic gout, right hand, with tophus (tophi)

  • M1A.242—

    Drug-induced chronic gout, left hand

  • M1A.2420—

    Drug-induced chronic gout, left hand, without tophus (tophi)

  • M1A.2421—

    Drug-induced chronic gout, left hand, with tophus (tophi)

  • M1A.249—

    Drug-induced chronic gout, unspecified hand

  • M1A.2490—

    Drug-induced chronic gout, unspecified hand, without tophus (tophi)

  • M1A.2491—

    Drug-induced chronic gout, unspecified hand, with tophus (tophi)

  • M1A.25—

    Drug-induced chronic gout, hip

  • M1A.251—

    Drug-induced chronic gout, right hip

  • M1A.2510—

    Drug-induced chronic gout, right hip, without tophus (tophi)

  • M1A.2511—

    Drug-induced chronic gout, right hip, with tophus (tophi)

  • M1A.252—

    Drug-induced chronic gout, left hip

  • M1A.2520—

    Drug-induced chronic gout, left hip, without tophus (tophi)

  • M1A.2521—

    Drug-induced chronic gout, left hip, with tophus (tophi)

  • M1A.259—

    Drug-induced chronic gout, unspecified hip

  • M1A.2590—

    Drug-induced chronic gout, unspecified hip, without tophus (tophi)

  • M1A.2591—

    Drug-induced chronic gout, unspecified hip, with tophus (tophi)

  • M1A.26—

    Drug-induced chronic gout, knee

  • M1A.261—

    Drug-induced chronic gout, right knee

  • M1A.2610—

    Drug-induced chronic gout, right knee, without tophus (tophi)

  • M1A.2611—

    Drug-induced chronic gout, right knee, with tophus (tophi)

  • M1A.262—

    Drug-induced chronic gout, left knee

  • M1A.2620—

    Drug-induced chronic gout, left knee, without tophus (tophi)

  • M1A.2621—

    Drug-induced chronic gout, left knee, with tophus (tophi)

  • M1A.269—

    Drug-induced chronic gout, unspecified knee

  • M1A.2690—

    Drug-induced chronic gout, unspecified knee, without tophus (tophi)

  • M1A.2691—

    Drug-induced chronic gout, unspecified knee, with tophus (tophi)

  • M1A.27—

    Drug-induced chronic gout, ankle and foot

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