ICD-10-CM Code Q66.21

Congenital metatarsus primus varus

Version 2020 Replaced Code Non-Billable Code

Not Valid for Submission

Q66.21 is a "header" nonspecific and non-billable code code, consider using a code with a higher level of specificity for a diagnosis of congenital metatarsus primus varus. The code is NOT valid for the year 2020 for the submission of HIPAA-covered transactions.

ICD-10:Q66.21
Short Description:Congenital metatarsus primus varus
Long Description:Congenital metatarsus primus varus

Consider the following ICD-10 codes with a higher level of specificity:

Replaced Code

This code was replaced in the 2020 ICD-10 code set with the code(s) listed below. The National Center for Health Statistics (NCHS) has published an update to the ICD-10-CM diagnosis codes which became effective October 1, 2019. This code was replaced for the FY 2020 (October 1, 2019 - September 30, 2020).

  • Q66.211 - Congenital metatarsus primus varus, right foot
  • Q66.212 - Congenital metatarsus primus varus, left foot
  • Q66.219 - Congenital metatarsus primus varus, unspecified foot

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Q66.21 are found in the index:


Replacement Code

Q6621 replaces the following previously assigned ICD-10 code(s):

  • Q66.2 - Congenital metatarsus (primus) varus

Convert Q66.21 to ICD-9

  • 754.52 - Metatarsus primus varus

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations and deformations of the musculoskeletal system (Q65-Q79)
      • Congenital deformities of feet (Q66)

Code History

  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - Code Deleted, effective from 10/1/2019 through 9/30/2020