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ICD-10-CM 2027

ICD-10 code for foot distortion

Q66.9

Congenital deformity of feet, unspecified

Header — needs a more specific code

From the official ICD-10-CM alphabetic index entry “Distortion (s) (congenital) › foot”. Page updated September 29, 2026.

About coding foot distortion

The ICD-10-CM code for foot distortion is Q66.9 (Congenital deformity of feet, unspecified).

Within Q66, choose Q66.9 (Congenital deformity of feet, unspecified) only when documentation doesn't support a more specific option: congenital talipes equinovarus (Q66.0), congenital talipes calcaneovarus (Q66.1), congenital metatarsus (primus) varus (Q66.2), other congenital varus deformities of feet (Q66.3), congenital talipes calcaneovalgus (Q66.4), congenital pes planus (Q66.5), other congenital valgus deformities of feet (Q66.6), congenital pes cavus (Q66.7) and 1 more.

To report this condition, pick the subcode that matches the documentation: Q66.90 (unspecified foot), Q66.91 (right foot) and Q66.92 (left foot).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2020 (expanded into subcodes).

Common questions about foot distortion ICD-10 codes

What is the ICD-10 code for foot distortion?

Q66.9 — Congenital deformity of feet, unspecified (a header code; report a more specific subcode).

Is Q66.9 billable?

No. Q66.9 is a header code. Report one of its more specific subcodes instead.