M21.4
Flat foot [pes planus] (acquired)
Non-billableCategory
Code Hierarchy
M21M21.4
Coding Guidelines
Excludes1 (Mutually Exclusive)
These codes should never be used together with M21.4
- congenital pes planus (Q66.5-)
Specific Codes (3)
Related Codes
M21.0Category
Valgus deformity, not elsewhere classified
M21.1Category
Varus deformity, not elsewhere classified
M21.2Category
Flexion deformity
M21.3Category
Wrist or foot drop (acquired)
M21.5Category
Acquired clawhand, clubhand, clawfoot and clubfoot
M21.6Category
Other acquired deformities of foot
M21.7Category
Unequal limb length (acquired)
M21.8Category
Other specified acquired deformities of limbs
M21.9Category
Unspecified acquired deformity of limb and hand


