Q66

Congenital deformities of feet

Diagnosis reference

Nonbillable category

This entry is a category or subcategory. Choose the appropriate billable descendant based on the clinical documentation.

Effective periodOctober 1, 2026–September 30, 2027

SourceCMS ICD-10-CM order file

ClassificationDiagnosis · clinical modification

Related entries

Up to 30 descendants in this category

CODE	DESCRIPTION	TYPE
Q66.0	Congenital talipes equinovarus	Category
Q66.00	Congenital talipes equinovarus, unspecified foot	Billable
Q66.01	Congenital talipes equinovarus, right foot	Billable
Q66.02	Congenital talipes equinovarus, left foot	Billable
Q66.1	Congenital talipes calcaneovarus	Category
Q66.10	Congenital talipes calcaneovarus, unspecified foot	Billable
Q66.11	Congenital talipes calcaneovarus, right foot	Billable
Q66.12	Congenital talipes calcaneovarus, left foot	Billable
Q66.2	Congenital metatarsus (primus) varus	Category
Q66.21	Congenital metatarsus primus varus	Category
Q66.211	Congenital metatarsus primus varus, right foot	Billable
Q66.212	Congenital metatarsus primus varus, left foot	Billable
Q66.219	Congenital metatarsus primus varus, unspecified foot	Billable
Q66.22	Congenital metatarsus adductus	Category
Q66.221	Congenital metatarsus adductus, right foot	Billable
Q66.222	Congenital metatarsus adductus, left foot	Billable
Q66.229	Congenital metatarsus adductus, unspecified foot	Billable
Q66.3	Other congenital varus deformities of feet	Category
Q66.30	Other congenital varus deformities of feet, unspecified foot	Billable
Q66.31	Other congenital varus deformities of feet, right foot	Billable
Q66.32	Other congenital varus deformities of feet, left foot	Billable
Q66.4	Congenital talipes calcaneovalgus	Category
Q66.40	Congenital talipes calcaneovalgus, unspecified foot	Billable
Q66.41	Congenital talipes calcaneovalgus, right foot	Billable
Q66.42	Congenital talipes calcaneovalgus, left foot	Billable
Q66.5	Congenital pes planus	Category
Q66.50	Congenital pes planus, unspecified foot	Billable
Q66.51	Congenital pes planus, right foot	Billable
Q66.52	Congenital pes planus, left foot	Billable
Q66.6	Other congenital valgus deformities of feet	Billable

Use the complete reference

This reference does not reproduce the full tabular hierarchy, inclusion notes, Excludes1/2 notes, sequencing instructions, or seventh-character rules. Review the official tables and coding guidelines.

Open official CMS files

ICD-10-CM codes describe diagnoses. They do not have an independent Medicare PFS reimbursement amount, and billability alone does not establish coverage.