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M21.4 - Flat foot [pes planus] (acquired)


The ICD 10 Code for Flat foot [pes planus] (acquired) is listed as M21.4.
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: M21.4
Description: Flat foot [pes planus] (acquired)
  • Excludes1: congenital pes planus (Q66.5-)
Chapter Diseases of the musculoskeletal system and connective tissue (M00-M99)
Block Other joint disorders (M20-M25)
Parent M21 - Other acquired deformities of limbs
ICD-10-CM Children (deeper level / typically more specific) of M21.4:
M21.40 - Flat foot [pes planus] (acquired), unspecified foot
M21.41 - Flat foot [pes planus] (acquired), right foot
M21.42 - Flat foot [pes planus] (acquired), left foot
ICD-10-CM Siblings (same level / similar specificity) of M21.4:
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)
M21.5 - 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