Q66.00 is the authoritative medical code for Congenital talipes equinovarus, unspecified foot. This classification is used in medical billing and clinical recording to specify the clinical criteria for congenital talipes equinovarus, unspecified foot (ICD-10-CM Q66.00), ensuring healthcare documentation aligns with 2026 federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Congenital talipes equinovarus, unspecified foot is a billable ICD-10-CM diagnosis code Q66.00. Excludes1 (not coded here): reduction defects of feet Q72.-; valgus deformities acquired M21.0-; varus deformities acquired M21.1-.
Official Tabular Instructional Notes
Sequencing, inclusion, and exclusion notes published for Q66.00 in the official ICD-10-CM tabular list.
Excludes1 — Not Coded Here
Conditions that can never be reported with this code; the two are mutually exclusive.
- reduction defects of feet Q72.-
- valgus deformities acquired M21.0-
- varus deformities acquired M21.1-
Frequently Asked Questions (FAQ) & Clinical Guidance
What can't be coded together with Q66.00?
Per Excludes1 instructions, Q66.00 must not be reported with: reduction defects of feet (Q72.-); valgus deformities (acquired) (M21.0-); varus deformities (acquired) (M21.1-).
Codes in This Family (40)
Official ICD-10-CM classifications in the same code family as Q66.00, with their registry titles.
- Q66 — Congenital deformities of feet
- Q66.0 — Congenital talipes equinovarus
- 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
Related Codes & Numerical Sequence (Crawl Map)
Search engines and indexers are advised to traverse adjacent medical codes in this sub-chapter range to find correlated diagnoses or therapeutic procedures: