ICD-10-CM 2027 diagnosis code

Q66.7Congenital pes cavus

Not billable — use a more specific code

Q66.7 is a header code, so it can't be reported by itself. Choose one of the 3 more specific codes beneath it.

Looking up by condition? See ICD-10 code for Cavus foot, ICD-10 code for Hollow foot, ICD-10 code for Gampsodactylia.

Code last changed in FY2020 (effective October 1, 2019). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Q66.7

Q66.7 is the ICD-10-CM diagnosis code for congenital pes cavus. It belongs to category Q66 (congenital deformities of feet), block Q65-Q79 (congenital malformations and deformations of the musculoskeletal system) and chapter 17 (congenital malformations, deformations, chromosomal abnormalities, and genetic disorders). It is a header code, so it can't be reported by itself; one of its 3 subcodes must be used instead.

Within Q66 (congenital deformities of feet), Q66.7 is specifically for congenital pes cavus. Related codes cover congenital talipes equinovarus (Q66.0), congenital talipes calcaneovarus (Q66.1), congenital metatarsus (primus) varus (Q66.2), other congenital varus deformities of feet (Q66.3), congenital talipes calcaneovalgus (Q66.4), congenital pes planus (Q66.5), other congenital valgus deformities of feet (Q66.6), other congenital deformities of feet (Q66.8) and 1 more.

To report this condition, pick the subcode that matches the documentation: Q66.70 (unspecified foot), Q66.71 (right foot) and Q66.72 (left foot).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015, and changed in FY2020 (expanded into subcodes).

Before ICD-10, this condition was coded in ICD-9-CM as 754.71 (talipes cavus).

Specific codes under Q66.7

Notes that apply from higher levels

Instructions written at a parent level also apply to Q66.7.

› From Q66 Congenital deformities of feet

Excludes1

reduction defects of feet (Q72.-)
valgus deformities (acquired) (M21.0-)
varus deformities (acquired) (M21.1-)

Broader instructions also apply from Chapter 17: Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders.

Alphabetic index entries

7 entries

Terms in the official ICD-10-CM index that lead to Q66.7.

ICD-9-CM equivalent

Converter →

754.71Talipes cavusexact

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
FY2020 (effective 10/1/2019): Expanded — no longer billable

Common questions about Q66.7

Is Q66.7 billable?: No. Q66.7 is a header code. Report one of its more specific subcodes instead.
What is the ICD-9 code for Q66.7?: The CMS General Equivalence Mappings map Q66.7 to ICD-9-CM 754.71.