M21.6

Other acquired deformities of foot

Non-billable header

M21.6 is a non-billable header code. Use one of the more specific codes below.

Inclusion terms

Includes (from M21)

  • 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 limb (Z89.-) (from M21)
  • congenital absence of limbs (Q71-Q73) (from M21)
  • congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74) (from M21)

Excludes2

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

  • deformities of toe (acquired) (M20.1-M20.6-)
  • arthropathic psoriasis (L40.5-) (from M21)
  • certain conditions originating in the perinatal period (P04-P96) (from M21)
  • certain infectious and parasitic diseases (A00-B99) (from M21)
  • compartment syndrome (traumatic) (T79.A-) (from M21)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A) (from M21)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99) (from M21)
  • endocrine, nutritional and metabolic diseases (E00-E88) (from M21)
  • injury, poisoning and certain other consequences of external causes (S00-T88) (from M21)
  • neoplasms (C00-D49) (from M21)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94) (from M21)
  • joints of the spine (M40-M54) (from M21)
  • acquired deformities of fingers or toes (M20.-) (from M21)
  • coxa plana (M91.2) (from M21)

Parent code

  • M21Other acquired deformities of limbsHeader

More specific codes M21.6

Related codes

  • M21.0Valgus deformity, not elsewhere classifiedHeader
  • M21.1Varus deformity, not elsewhere classifiedHeader
  • M21.2Flexion deformityHeader
  • M21.3Wrist or foot drop (acquired)Header
  • M21.4Flat foot [pes planus] (acquired)Header
  • M21.5Acquired clawhand, clubhand, clawfoot and clubfootHeader
  • M21.7Unequal limb length (acquired)Header
  • M21.8Other specified acquired deformities of limbsHeader
  • M21.9Unspecified acquired deformity of limb and handHeader

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