ICD-10-CM > M00-M99 > M20-M25 > M21 > M21.6 > M21.6X M21.6X Other acquired deformities of foot Non-Billable/Non-Specific Codes M21.6X1Other acquired deformities of right footM21.6X2Other acquired deformities of left footM21.6X9Other acquired deformities of unspecified foot