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  4. Q65-Q79
  5. Q66
  6. 2024 ICD-10-CM Code Q66
Version 2024
Non-Billable Code

2024 ICD-10-CM Diagnosis Code Q66

Congenital deformities of feet

ICD-10-CM Code:
Q66
ICD-10 Code for:
Congenital deformities of feet
Is Billable?
Not Valid for Submission
Code Navigator:

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)

Q66 is a non-specific and non-billable diagnosis code code, consider using a code with a higher level of specificity for a diagnosis of congenital deformities of feet. The code is not specific and is NOT valid for the year 2024 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding Applicable to Congenital deformities of feet

Non-specific codes like Q66 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10-CM codes with a higher level of specificity when coding for congenital deformities of feet:

  • Q66.0 for Congenital talipes equinovarus - NON-BILLABLE CODE

  • Use Q66.00 for Congenital talipes equinovarus, unspecified foot - BILLABLE CODE

  • Use Q66.01 for Congenital talipes equinovarus, right foot - BILLABLE CODE

  • Use Q66.02 for Congenital talipes equinovarus, left foot - BILLABLE CODE

  • Q66.1 for Congenital talipes calcaneovarus - NON-BILLABLE CODE

  • Use Q66.10 for Congenital talipes calcaneovarus, unspecified foot - BILLABLE CODE

  • Use Q66.11 for Congenital talipes calcaneovarus, right foot - BILLABLE CODE

  • Use Q66.12 for Congenital talipes calcaneovarus, left foot - BILLABLE CODE

  • Q66.2 for Congenital metatarsus (primus) varus - NON-BILLABLE CODE

  • Q66.21 for Congenital metatarsus primus varus - NON-BILLABLE CODE

  • Q66.22 for Congenital metatarsus adductus - NON-BILLABLE CODE

  • Q66.3 for Other congenital varus deformities of feet - NON-BILLABLE CODE

  • Use Q66.30 for Other congenital varus deformities of feet, unspecified foot - BILLABLE CODE

  • Use Q66.31 for Other congenital varus deformities of feet, right foot - BILLABLE CODE

  • Use Q66.32 for Other congenital varus deformities of feet, left foot - BILLABLE CODE

  • Q66.4 for Congenital talipes calcaneovalgus - NON-BILLABLE CODE

  • Use Q66.40 for Congenital talipes calcaneovalgus, unspecified foot - BILLABLE CODE

  • Use Q66.41 for Congenital talipes calcaneovalgus, right foot - BILLABLE CODE

  • Use Q66.42 for Congenital talipes calcaneovalgus, left foot - BILLABLE CODE

  • Q66.5 for Congenital pes planus - NON-BILLABLE CODE

  • Use Q66.50 for Congenital pes planus, unspecified foot - BILLABLE CODE

  • Use Q66.51 for Congenital pes planus, right foot - BILLABLE CODE

  • Use Q66.52 for Congenital pes planus, left foot - BILLABLE CODE

  • Use Q66.6 for Other congenital valgus deformities of feet - BILLABLE CODE

  • Q66.7 for Congenital pes cavus - NON-BILLABLE CODE

  • Use Q66.70 for Congenital pes cavus, unspecified foot - BILLABLE CODE

  • Use Q66.71 for Congenital pes cavus, right foot - BILLABLE CODE

  • Use Q66.72 for Congenital pes cavus, left foot - BILLABLE CODE

  • Q66.8 for Other congenital deformities of feet - NON-BILLABLE CODE

  • Use Q66.80 for Congenital vertical talus deformity, unspecified foot - BILLABLE CODE

  • Use Q66.81 for Congenital vertical talus deformity, right foot - BILLABLE CODE

  • Use Q66.82 for Congenital vertical talus deformity, left foot - BILLABLE CODE

  • Use Q66.89 for Other specified congenital deformities of feet - BILLABLE CODE

  • Q66.9 for Congenital deformity of feet, unspecified - NON-BILLABLE CODE

  • Use Q66.90 for Congenital deformity of feet, unspecified, unspecified foot - BILLABLE CODE

  • Use Q66.91 for Congenital deformity of feet, unspecified, right foot - BILLABLE CODE

  • Use Q66.92 for Congenital deformity of feet, unspecified, left foot - BILLABLE CODE

Tabular List of Diseases and Injuries

The following annotation back-references are applicable to this diagnosis code. The Tabular List of Diseases and Injuries is a list of ICD-10-CM codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more.


Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • reduction defects of feet Q72
  • valgus deformities acquired M21.0
  • varus deformities acquired M21.1

Code History

  • FY 2024 - No Change, effective from 10/1/2023 through 9/30/2024
  • FY 2023 - No Change, effective from 10/1/2022 through 9/30/2023
  • FY 2022 - No Change, effective from 10/1/2021 through 9/30/2022
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016. This was the first year ICD-10-CM was implemented into the HIPAA code set.