Q66: Congenital deformities of feet

Codes under Q66 (Congenital deformities of feet). A ✓ marks a billable (fully specified) code; category codes without a ✓ are not billable on their own.

Code	Description	Billable
Q66.0	Congenital talipes equinovarus	—
Q66.00	Congenital talipes equinovarus, unspecified foot	✓
Q66.01	Congenital talipes equinovarus, right foot	✓
Q66.1	Congenital talipes calcaneovarus	—
Q66.02	Congenital talipes equinovarus, left foot	✓
Q66.2	Congenital metatarsus (primus) varus	—
Q66.3	Other congenital varus deformities of feet	—
Q66.4	Congenital talipes calcaneovalgus	—
Q66.5	Congenital pes planus	—
Q66.6	Other congenital valgus deformities of feet	✓
Q66.7	Congenital pes cavus	—
Q66.8	Other congenital deformities of feet	—
Q66.9	Congenital deformity of feet, unspecified	—
Q66.10	Congenital talipes calcaneovarus, unspecified foot	✓
Q66.11	Congenital talipes calcaneovarus, right foot	✓
Q66.12	Congenital talipes calcaneovarus, left foot	✓
Q66.21	Congenital metatarsus primus varus	—
Q66.22	Congenital metatarsus adductus	—
Q66.30	Other congenital varus deformities of feet, unspecified foot	✓
Q66.31	Other congenital varus deformities of feet, right foot	✓
Q66.32	Other congenital varus deformities of feet, left foot	✓
Q66.40	Congenital talipes calcaneovalgus, unspecified foot	✓
Q66.41	Congenital talipes calcaneovalgus, right foot	✓
Q66.42	Congenital talipes calcaneovalgus, left foot	✓
Q66.50	Congenital pes planus, unspecified foot	✓
Q66.51	Congenital pes planus, right foot	✓
Q66.52	Congenital pes planus, left foot	✓
Q66.70	Congenital pes cavus, unspecified foot	✓
Q66.71	Congenital pes cavus, right foot	✓
Q66.72	Congenital pes cavus, left foot	✓
Q66.80	Congenital vertical talus deformity, unspecified foot	✓
Q66.81	Congenital vertical talus deformity, right foot	✓
Q66.82	Congenital vertical talus deformity, left foot	✓
Q66.89	Other specified congenital deformities of feet	✓
Q66.90	Congenital deformity of feet, unspecified, unspecified foot	✓
Q66.91	Congenital deformity of feet, unspecified, right foot	✓
Q66.92	Congenital deformity of feet, unspecified, left foot	✓
Q66.211	Congenital metatarsus primus varus, right foot	✓
Q66.212	Congenital metatarsus primus varus, left foot	✓
Q66.219	Congenital metatarsus primus varus, unspecified foot	✓
Q66.221	Congenital metatarsus adductus, right foot	✓
Q66.222	Congenital metatarsus adductus, left foot	✓
Q66.229	Congenital metatarsus adductus, unspecified foot	✓

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Informational only, not coding or medical advice. Verify against the official ICD-10-CM (FY2026) and your payer's guidelines.

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