ICD-10-CM › Q00-QA1 › Q65-Q79 › Q66 Congenital deformities of feet › Q66.5

Q66.5

Congenital pes planus

Not billableICD-10-CM diagnosis code.

This code exists but cannot be submitted on its own. It groups the more specific codes beneath it.

A category header for its whole life, FY2016 onwards. It has never been valid for submission on its own.

Submit one of these 3 more specific codes instead:

  • Q66.50 Congenital pes planus, unspecified foot
  • Q66.51 Congenital pes planus, right foot
  • Q66.52 Congenital pes planus, left foot

What has happened to this code

Every change the publisher made, from 2007 to now. Entries marked draft are from the pre-implementation releases: ICD-10 took effect on 1 October 2015, so nothing before FY2016 was ever valid on a claim.

  1. FY2007 Added to the draft code set draft Congenital pes planus

Official coding rules

Published by CDC for FY2027. A rule attached to a category binds every code beneath it, so the rules inherited from this code's ancestors are shown with the code they come from.

Inherited from Q66 Congenital deformities of feet

Excludes1 - never coded here

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

How CDC's index refers to this code

Wording from the official alphabetic index. Much of it appears nowhere in the code description, which is why a search for the everyday phrase so often finds nothing.

Codes in the same group

CodeDescriptionStatus
Q66.0 Congenital talipes equinovarus Not billable
Q66.1 Congenital talipes calcaneovarus Not billable
Q66.2 Congenital metatarsus (primus) varus Not billable
Q66.3 Other congenital varus deformities of feet Not billable
Q66.4 Congenital talipes calcaneovalgus Not billable
Q66.6 Other congenital valgus deformities of feet Valid
Q66.7 Congenital pes cavus Not billable
Q66.8 Other congenital deformities of feet Not billable
Q66.9 Congenital deformity of feet, unspecified Not billable