Q66
⚠ Non-billable (Header)Congenital deformities of feet
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
⚠️ This is a category header code — not billable. Use a more specific child code below.
❌ Excludes1
directCannot be coded with Q66
- • reduction defects of feet (Q72.-)
- • valgus deformities (acquired) (M21.0-)
- • varus deformities (acquired) (M21.1-)
Child Codes (10)
Q66.0Congenital talipes equinovarusQ66.1Congenital talipes calcaneovarusQ66.2Congenital metatarsus (primus) varusQ66.3Other congenital varus deformities of feetQ66.4Congenital talipes calcaneovalgusQ66.5Congenital pes planusQ66.6Other congenital valgus deformities of feetQ66.7Congenital pes cavusQ66.8Other congenital deformities of feetQ66.9Congenital deformity of feet, unspecified
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CodeQ66
BillableNo — Header code
CategoryCongenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Excludes13 rule(s)
Excludes20 note(s)
Child codes10
Data Source
CMS ICD-10-CM 2026 Tabular List
Updated October 1, 2025 (FY2026)