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Q66 ICD-10-CA category: Congenital deformities of feet

Q66 isn’t a code on its own. Choose one of the 10 codes beneath it, the one the documentation supports.

Official description

Q66

Congenital deformities of feet

ICD-10-CA · Canada

Codes in Q66

Q66 isn’t a code on its own. Open the code that matches what the note documents.

Q66.0Talipes equinovarusQ66.1Talipes calcaneovarusQ66.2Metatarsus varusQ66.3Other congenital varus deformities of feetQ66.4Talipes calcaneovalgusQ66.5Congenital pes planusQ66.6Other congenital valgus deformities of feetQ66.7Pes cavusQ66.8Other congenital deformities of feetQ66.9Congenital deformity of feet, unspecified

Notes for Q66

As CIHI prints them, with any note Q66 takes from the headings above it.

Excludes

Conditions classified elsewhere.

  • Reduction defects of feet (Q72.-)valgus deformities (acquired) (M21.0)varus deformities (acquired) (M21.1)
  • Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)

Where Q66 sits

  1. 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  2. 2Block Q65-Q79Congenital malformations and deformations of the musculoskeletal system
  3. 3Category Q66Congenital deformities of feet

Source and release

Data release
ICD-10-CA · FY 2026–2027
Effective date
Apr 1, 2026
Publisher
CIHI

This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.

See Q66 in the CIHI source

Frequently asked questions

Is Q66 a valid ICD-10-CA code?

No. Q66 (Congenital deformities of feet) is a category heading in CIHI’s ICD-10-CA FY 2026–2027 release. It holds 10 codes; record the one the documentation supports.

Where is Q66 in ICD-10-CA?

Q66 sits under Q65-Q79 Congenital malformations and deformations of the musculoskeletal system, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).

What coding notes apply to Q66?

ICD-10-CA lists Excludes notes for Q66, including those from the headings it sits under. They are listed on this page with where each one comes from.

Which ICD-10-CA release does this page use?

It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.

Codes beside Q66

Q65Congenital deformities of hipQ67Congenital musculoskeletal deformities of head, face, spine and chestQ68Other congenital musculoskeletal deformitiesQ69PolydactylyQ70SyndactylyQ71Reduction defects of upper limbQ72Reduction defects of lower limbQ73Reduction defects of unspecified limbQ74Other congenital malformations of limb(s)Q75Other congenital malformations of skull and face bonesQ76Congenital malformations of spine and bony thoraxQ77Osteochondrodysplasia with defects of growth of tubular bones and spineQ78Other osteochondrodysplasiasQ79Congenital malformations of the musculoskeletal system, not elsewhere classified