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
PrevNext
  • M1A.4320—

    Other secondary chronic gout, left wrist, without tophus (tophi)

  • M1A.4321—

    Other secondary chronic gout, left wrist, with tophus (tophi)

  • M1A.439—

    Other secondary chronic gout, unspecified wrist

  • M1A.4390—

    Other secondary chronic gout, unspecified wrist, without tophus (tophi)

  • M1A.4391—

    Other secondary chronic gout, unspecified wrist, with tophus (tophi)

  • M1A.441—

    Other secondary chronic gout, right hand

  • M1A.4410—

    Other secondary chronic gout, right hand, without tophus (tophi)

  • M1A.4411—

    Other secondary chronic gout, right hand, with tophus (tophi)

  • M1A.442—

    Other secondary chronic gout, left hand

  • M1A.4420—

    Other secondary chronic gout, left hand, without tophus (tophi)

  • M1A.4421—

    Other secondary chronic gout, left hand, with tophus (tophi)

  • M1A.449—

    Other secondary chronic gout, unspecified hand

  • M1A.4490—

    Other secondary chronic gout, unspecified hand, without tophus (tophi)

  • M1A.4491—

    Other secondary chronic gout, unspecified hand, with tophus (tophi)

  • M1A.451—

    Other secondary chronic gout, right hip

  • M1A.4510—

    Other secondary chronic gout, right hip, without tophus (tophi)

  • M1A.4511—

    Other secondary chronic gout, right hip, with tophus (tophi)

  • M1A.452—

    Other secondary chronic gout, left hip

  • M1A.4520—

    Other secondary chronic gout, left hip, without tophus (tophi)

  • M1A.4521—

    Other secondary chronic gout, left hip, with tophus (tophi)

  • M1A.459—

    Other secondary chronic gout, unspecified hip

  • M1A.4590—

    Other secondary chronic gout, unspecified hip, without tophus (tophi)

  • M1A.4591—

    Other secondary chronic gout, unspecified hip, with tophus (tophi)

  • M1A.461—

    Other secondary chronic gout, right knee

  • M1A.4610—

    Other secondary chronic gout, right knee, without tophus (tophi)

  • M1A.4611—

    Other secondary chronic gout, right knee, with tophus (tophi)

  • M1A.462—

    Other secondary chronic gout, left knee

  • M1A.4620—

    Other secondary chronic gout, left knee, without tophus (tophi)

  • M1A.4621—

    Other secondary chronic gout, left knee, with tophus (tophi)

  • M1A.469—

    Other secondary chronic gout, unspecified knee

  • M1A.4690—

    Other secondary chronic gout, unspecified knee, without tophus (tophi)

  • M1A.4691—

    Other secondary chronic gout, unspecified knee, with tophus (tophi)

  • M1A.471—

    Other secondary chronic gout, right ankle and foot

  • M1A.4710—

    Other secondary chronic gout, right ankle and foot, without tophus (tophi)

  • M1A.4711—

    Other secondary chronic gout, right ankle and foot, with tophus (tophi)

  • M1A.472—

    Other secondary chronic gout, left ankle and foot

  • M1A.4720—

    Other secondary chronic gout, left ankle and foot, without tophus (tophi)

  • M1A.4721—

    Other secondary chronic gout, left ankle and foot, with tophus (tophi)

  • M1A.479—

    Other secondary chronic gout, unspecified ankle and foot

  • M1A.4790—

    Other secondary chronic gout, unspecified ankle and foot, without tophus (tophi)

  • M1A.4791—

    Other secondary chronic gout, unspecified ankle and foot, with tophus (tophi)

  • M1A.48—

    Other secondary chronic gout, vertebrae

  • M1A.48X0—

    Other secondary chronic gout, vertebrae, without tophus (tophi)

  • M1A.48X1—

    Other secondary chronic gout, vertebrae, with tophus (tophi)

  • M1A.49—

    Other secondary chronic gout, multiple sites

  • M1A.49X0—

    Other secondary chronic gout, multiple sites, without tophus (tophi)

  • M1A.49X1—

    Other secondary chronic gout, multiple sites, with tophus (tophi)

  • M1A.9—

    Chronic gout, unspecified

  • M1A.9XX0—

    Chronic gout, unspecified, without tophus (tophi)

  • M1A.9XX1—

    Chronic gout, unspecified, with tophus (tophi)

PreviousPage 33 of 141Next