M20.1

Hallux valgus (acquired)

Non-billable header

M20.1 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes (from M20)

  • Note: Use an external cause code following the code for the musculoskeletal condition, if applicable, to identify the cause of the musculoskeletal condition

Excludes1

Not coded here — never report together with this code.

  • acquired absence of fingers and toes (Z89.-) (from M20)
  • congenital absence of fingers and toes (Q71.3-, Q72.3-) (from M20)
  • congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-) (from M20)

Excludes2

Not included here — may be reported together when both conditions exist.

  • bunion (M21.6-)
  • arthropathic psoriasis (L40.5-) (from M20)
  • certain conditions originating in the perinatal period (P04-P96) (from M20)
  • certain infectious and parasitic diseases (A00-B99) (from M20)
  • compartment syndrome (traumatic) (T79.A-) (from M20)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from M20)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from M20)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from M20)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from M20)
  • neoplasms (C00-D49) (from M20)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from M20)
  • joints of the spine (M40-M54) (from M20)

Also known as

  • Deformity, toe, hallux valgus
  • Hallux, valgus

Parent code

  • M20Acquired deformities of fingers and toesHeader

More specific codes M20.1

  • M20.10Hallux valgus (acquired), unspecified footBillable
  • M20.11Hallux valgus (acquired), right footBillable
  • M20.12Hallux valgus (acquired), left footBillable

Related codes

  • M20.0Deformity of finger(s)Header
  • M20.2Hallux rigidusHeader
  • M20.3Hallux varus (acquired)Header
  • M20.4Other hammer toe(s) (acquired)Header
  • M20.5Other deformities of toe(s) (acquired)Header
  • M20.6Acquired deformities of toe(s), unspecifiedHeader

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