Q66

Q66: Congenital deformities of feet

Non-billable headerICD-10-CM

Q66 is a non-billable header ICD-10-CM code for congenital deformities of feet. 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.

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

Other codes that can never be billed with Q66

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

M20Acquired deformities of fingers and toes
M21Other acquired deformities of limbs
M21.0Valgus deformity, not elsewhere classified
M21.1Varus deformity, not elsewhere classified
M21.4Flat foot [pes planus] (acquired)
M21.5Acquired clawhand, clubhand, clawfoot and clubfoot

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

10 child codes. Green means billable.