Q66.42 is the authoritative medical code for Congenital talipes calcaneovalgus, left foot. This classification is used in medical billing and clinical recording to specify the clinical criteria for congenital talipes calcaneovalgus, left foot (ICD-10-CM Q66.42), ensuring healthcare documentation aligns with current federal coding standards.
Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.
Official Registry Overview & Definition
Congenital talipes calcaneovalgus, left foot is a billable ICD-10-CM diagnosis code Q66.42. 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 Q66.42 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 Q66.42?
Per official ICD-10-CM Excludes1 instructions, Q66.42 must not be reported together with: reduction defects of feet (Q72.-); valgus deformities (acquired) (M21.0-); varus deformities (acquired) (M21.1-).
Nearest Codes in This Family
Official ICD-10-CM classifications closest to Q66.42 in its code family, with their registry titles.
- 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
- Q66.5 — 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
View all 40 codes in the Q66 family