Q66 Congenital deformities of feet

⚠ Non-Billable ICD-10-CM 2026
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The ICD-10-CM code for Congenital deformities of feet is Q66 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Section
Q65-Q79: Congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
Category Q66
44 codes (32 billable)
FY2026 Status
Stable since FY2024
Excludes1
Not coded here. These conditions should NOT be coded together with Q66.
  • reduction defects of feet (Q72.-)
  • valgus deformities (acquired) (M21.0-)
  • varus deformities (acquired) (M21.1-)

Official Coding Guidelines

POA indicator for congenital conditions/anomalies and Q00-Q99 exception

Congenital conditions and anomalies Assign “Y” for congenital conditions and anomalies except for categories Q00- Q99, Congenital anomalies, which are on the exempt list. Congenital conditions are always considered present on admission.

— ICD-10-CM Official Guidelines for Coding and Reporting, FY2026, Section III

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

Cite This Page

Reference Q66 with the canonical source and edition:

Q66 — Congenital deformities of feet. ICD-10 Coding Pro (ICD-10-CM FY2026). https://icd10codingpro.com/codes/Q66

Canonical URL: https://icd10codingpro.com/codes/Q66

Related Codes

More Specific Codes

Q66.0 Congenital talipes equinovarus Q66.1 Congenital talipes calcaneovarus 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

All Codes in Q66

Every most-specific code under Q66 Congenital deformities of feet (32 codes):

Show the complete Q66 code list
Q66.00 Congenital talipes equinovarus, unspecified foot Q66.01 Congenital talipes equinovarus, right foot Q66.02 Congenital talipes equinovarus, left foot Q66.10 Congenital talipes calcaneovarus, unspecified foot Q66.11 Congenital talipes calcaneovarus, right foot Q66.12 Congenital talipes calcaneovarus, 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 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 Q66.6 Other congenital valgus deformities of feet 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
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Reviewed by Prajwal Shrestha, CPC, CRC
Certified Professional Coder (CPC) and Certified Risk Adjustment Coder (CRC) · AAPC Member ID 01997614 · About · Editorial policy · Content last reviewed: 2025-10-01

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