Q66.5

Q66.5: Congenital pes planus

Non-billable headerICD-10-CM

Q66.5 is a non-billable header ICD-10-CM code for congenital pes planus. It cannot be billed on its own: choose one of the more specific child codes below.

Excludes1: never code together

These conditions cannot occur together. Billing both on the same encounter is a denial.

pes planus, acquired (M21.4)

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

Congenital flat foot
Congenital rigid flat foot
Congenital spastic (everted) flat foot

Excludes1 inherited from the categories above Q66.5

A category’s note binds every code beneath it.

Written on Q66: Congenital deformities of feet

reduction defects of feet (Q72.-)
valgus deformities (acquired) (M21.0-)
varus deformities (acquired) (M21.1-)

Other codes that can never be billed with Q66.5

Their own Excludes1 notes name this code, so the conflict is not listed above.

M20Acquired deformities of fingers and toes
M21.4Flat foot [pes planus] (acquired)

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Code history

Unchanged in every release from FY2024 to FY2027.

Code to one of these instead Q66.5

3 child codes. Green means billable.