2020 ICD-10-CM Diagnosis Code Q66.3

Other congenital varus deformities of feet

    2016 2017 2018 2019 2020 - Converted to Parent Code Non-Billable/Non-Specific Code
  • Q66.3 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • ICD-10-CM Q66.3 is a new 2020 ICD-10-CM code that became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q66.3 - other international versions of ICD-10 Q66.3 may differ.
Applicable To
  • Hallux varus, congenital
The following code(s) above Q66.3 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 Q66.3:
  • Q00-Q99
    2020 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • 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 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
  • Bilateral talipes varus
  • Congenital bilateral hallux varus
  • Congenital hallux varus
  • Congenital varus deformity of foot
  • Hallux varus, congenital
  • Left talipes varus
  • Right talipes varus
  • Talipes varus of left foot
  • Talipes varus of right foot
  • Varus foot deformity, congenital
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): Deleted code
  • 2020 (effective 10/1/2019): New code

Diagnosis Index entries containing back-references to Q66.3:
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • foot NEC Q74.2
      ICD-10-CM Diagnosis Code Q74.2

      Other congenital malformations of lower limb(s), including pelvic girdle

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital fusion of sacroiliac joint
      • Congenital malformation of ankle joint
      • Congenital malformation of sacroiliac joint
      Type 1 Excludes
      • anteversion of femur (neck) (Q65.89)
      • varus Q66.3- (congenital)
  • Deformity Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
  • Hallux
    • varus (acquired) M20.3-
      ICD-10-CM Diagnosis Code M20.3-

      Hallux varus (acquired)

        2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
      • congenital Q66.3-
  • Talipes (congenital) Q66.89
    ICD-10-CM Diagnosis Code Q66.89

    Other specified congenital deformities of feet

      2016 2017 2018 2019 - Revised Code 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital asymmetric talipes
    • Congenital clubfoot NOS
    • Congenital talipes NOS
    • Congenital tarsal coalition
    • Hammer toe, congenital
    • varus Q66.3-

ICD-10-CM Codes Adjacent To Q66.3
Q66.12 …… left foot
Q66.2 Congenital metatarsus (primus) varus
Q66.21 Congenital metatarsus primus varus
Q66.211 …… right foot
Q66.212 …… left foot
Q66.219 …… unspecified foot
Q66.22 Congenital metatarsus adductus
Q66.221 …… right foot
Q66.222 …… left foot
Q66.229 …… unspecified foot
Q66.3 Other congenital varus deformities of feet
Q66.30 …… unspecified foot
Q66.31 …… right foot
Q66.32 …… left foot
Q66.4 Congenital talipes calcaneovalgus
Q66.40 …… unspecified foot
Q66.41 …… right foot
Q66.42 …… left foot
Q66.5 Congenital pes planus
Q66.50 …… unspecified foot
Q66.51 …… right foot

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