ICD-10-CM Q66: Congenital deformities of feet

ICD-10-CM Diagnosis Code (2025)

Official Description for Q66

Congenital deformities of feet

Coding Notes & Guidelines for Q66

Excludes1: Not Coded Here
  • reduction defects of feet (Q72.-)
  • valgus deformities (acquired) (M21.0-)
  • varus deformities (acquired) (M21.1-)
Excludes1: Not Coded Here

pes planus, acquired (M21.4)

Inclusion Terms

Congenital metatarsus varus

Inclusion Terms

Hallux varus, congenital

Inclusion Terms
  • Congenital flat foot
  • Congenital rigid flat foot
  • Congenital spastic (everted) flat foot
Inclusion Terms

Congenital metatarsus valgus

Inclusion Terms
  • Congenital asymmetric talipes
  • Congenital clubfoot NOS
  • Congenital talipes NOS
  • Congenital tarsal coalition
  • Hammer toe, congenital

Child Codes (More Specific Codes for Q66):

Q66.0 - Congenital talipes equinovarus Q66.00 - Congenital talipes equinovarus, unspecified foot Q66.01 - Congenital talipes equinovarus, right foot Q66.02 - Congenital talipes equinovarus, left foot Q66.1 - Congenital talipes calcaneovarus Q66.10 - Congenital talipes calcaneovarus, unspecified foot Q66.11 - Congenital talipes calcaneovarus, right foot Q66.12 - Congenital talipes calcaneovarus, left foot Q66.2 - Congenital metatarsus (primus) varus Q66.21 - Congenital metatarsus primus varus Q66.211 - Congenital metatarsus primus varus, right foot Q66.212 - Congenital metatarsus primus varus, left foot Q66.219 - Congenital metatarsus primus varus, unspecified foot Q66.22 - Congenital metatarsus adductus Q66.221 - Congenital metatarsus adductus, right foot Q66.222 - Congenital metatarsus adductus, left foot Q66.229 - Congenital metatarsus adductus, unspecified foot Q66.3 - Other congenital varus deformities of feet 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 Q66.4 - Congenital talipes calcaneovalgus Q66.40 - Congenital talipes calcaneovalgus, unspecified foot Q66.41 - Congenital talipes calcaneovalgus, right foot Q66.42 - Congenital talipes calcaneovalgus, left foot Q66.5 - Congenital pes planus 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 Q66.7 - Congenital pes cavus Q66.70 - Congenital pes cavus, unspecified foot Q66.71 - Congenital pes cavus, right foot Q66.72 - Congenital pes cavus, left foot Q66.8 - Other congenital deformities of feet 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 Q66.9 - Congenital deformity of feet, unspecified 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

About ICD-10-CM Code Q66 (Congenital deformities of feet)

ICD-10-CM code Q66 is a billable or specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes. The 2025 edition of ICD-10-CM Q66 became effective on October 1, 2024.

This page provides detailed information about Q66 - Congenital deformities of feet. It includes common terminology, coding guidelines such as "Includes," "Excludes1," and "Excludes2" notes, and information on required 7th characters. Utilizing this information correctly is essential for accurate medical coding and claims submission for conditions like Congenital deformities of feet.