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M21 - Other acquired deformities of limbs


The ICD 10 Code for Other acquired deformities of limbs is listed as M21.
Additional information concerning this code and description can be found below including ICD 9 crosswalks / GEMS, chapter information, and DRGs where available.

ICD 10 CM Field Value
Diagnosis Code: M21
Description: Other acquired deformities of limbs
  • Excludes1: acquired absence of limb (Z89.-)
  • congenital absence of limbs (Q71-Q73)
  • congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)
  • Excludes2: acquired deformities of fingers or toes (M20.-)
  • coxa plana (M91.2)
Chapter Diseases of the musculoskeletal system and connective tissue (M00-M99)
ICD-10-CM Children (deeper level / typically more specific) of M21:
M21.0 - Valgus deformity, not elsewhere classified
M21.1 - Varus deformity, not elsewhere classified
M21.2 - Flexion deformity
M21.3 - Wrist or foot drop (acquired)
M21.4 - Flat foot [pes planus] (acquired)
M21.5 - Acquired clawhand, clubhand, clawfoot and clubfoot
M21.6 - Other acquired deformities of foot
M21.7 - Unequal limb length (acquired)
M21.8 - Other specified acquired deformities of limbs
M21.9 - Unspecified acquired deformity of limb and hand