Q66.3 ICD-10-CM Code: Other congenital varus deformities of feet
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
Q66.3Other congenital varus deformities of feet
ICD-10-CM diagnosis code · United States clinical modification
Where Q66.3 sits
- 1
Chapter 17
Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- 2
Section
Congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
- 3
Category Q66
Congenital deformities of feet
- 4
Code Q66.3
Other congenital varus deformities of feet
Codes under Q66.3
Q66.3 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Notes for this code
Inclusion terms
- Hallux varus, congenital
Code first
No “code first” instruction is listed for Q66.3.
Use additional code
No “use additional code” instruction is listed for Q66.3.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for Q66.3.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for Q66.3.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code Q66.3 mean?
Q66.3 is the FY 2027 U.S. ICD-10-CM code for “Other congenital varus deformities of feet.”
Is Q66.3 a billable or specific ICD-10-CM code?
No. Q66.3 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is Q66.3 located in ICD-10-CM?
Q66.3 is listed in Chapter 17, Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1), within Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) (Q65–Q79), under category Q66, Congenital deformities of feet.
What coding notes are listed for Q66.3?
Its listed inclusion terms are Hallux varus, congenital. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.