2021 ICD-10-CM Diagnosis Code Q66.8

Other congenital deformities of feet

    2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
  • Q66.8 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2021 edition of ICD-10-CM Q66.8 became effective on October 1, 2020.
  • This is the American ICD-10-CM version of Q66.8 - other international versions of ICD-10 Q66.8 may differ.
The following code(s) above Q66.8 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q66.8:
  • Q00-Q99
    2021 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
  • Q66
    ICD-10-CM Diagnosis Code Q66

    Congenital deformities of feet

      2016 2017 2018 2019 2020 2021 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • reduction defects of feet (Q72.-)
    • valgus deformities (acquired) (M21.0-)
    • varus deformities (acquired) (M21.1-)
    Congenital deformities of feet
Approximate Synonyms
  • Accessory navicular bone
  • Accessory navicular bone of foot
  • Accessory tarsal bones
  • Brachydactyly of fingers
  • Brachydactyly of hand
  • Brachydactyly of toes
  • Brachymetatarsia
  • Coalition of calcaneus
  • Congenital contracture of toe
  • Congenital hammer toe
  • Contracted toe, congenital
  • Fusion of calcaneus (heel bone)
  • Hammer toe, congenital
  • Supernumerary tarsal bone
  • Talipes
  • Tarsal coalitions
Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
  • 2020 (effective 10/1/2019): No change
  • 2021 (effective 10/1/2020): No change
ICD-10-CM Codes Adjacent To Q66.8
Q66.42 …… left foot
Q66.5 Congenital pes planus
Q66.50 …… unspecified foot
Q66.51 …… right foot
Q66.52 …… left foot
Q66.6 Other congenital valgus deformities of feet
Q66.7 Congenital pes cavus
Q66.70 …… unspecified foot
Q66.71 …… right foot
Q66.72 …… left foot
Q66.8 Other congenital deformities of feet
Q66.80 Congenital vertical talus deformity, unspecified foot
Q66.81 Congenital vertical talus deformity, right foot
Q66.82 Congenital vertical talus deformity, left foot
Q66.89 Other specified congenital deformities of feet
Q66.9 Congenital deformity of feet, unspecified
Q66.90 …… unspecified foot
Q66.91 …… right foot
Q66.92 …… left foot
Q67 Congenital musculoskeletal deformities of head, face, spine and chest
Q67.0 Congenital facial asymmetry

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.