2020 ICD-10-CM Diagnosis Code Q66.5

Congenital pes planus

    2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
  • Q66.5 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
  • The 2020 edition of ICD-10-CM Q66.5 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q66.5 - other international versions of ICD-10 Q66.5 may differ.
Applicable To
  • Congenital flat foot
  • Congenital rigid flat foot
  • Congenital spastic (everted) flat foot
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Q66.5. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • pes planus, acquired (
    ICD-10-CM Diagnosis Code M21.4

    Flat foot [pes planus] (acquired)

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital pes planus (Q66.5-)
    M21.4
    )
The following code(s) above Q66.5 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 Q66.5:
  • 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
  • Pes planus, congenital (flat foot, from birth)
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
Code annotations containing back-references to Q66.5:
  • Type 1 Excludes: M21.4
    ICD-10-CM Diagnosis Code M21.4

    Flat foot [pes planus] (acquired)

      2016 2017 2018 2019 2020 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • congenital pes planus (Q66.5-)

Diagnosis Index entries containing back-references to Q66.5:
  • Flat
  • 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

ICD-10-CM Codes Adjacent To Q66.5
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
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

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