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Q66Non-billableSave

Q66 - Congenital deformities of feet

ICD-10-CM Chapter 17: Congenital malformations, deformations and chromosomal abnormalities · Q65-Q79 Congenital malformations and deformations of the musculoskeletal system (Q65-Q79) · Top-level category · FY2027

Coding Guidance

Q66 is a non-billable heading. Report one of the 10 more specific codes below.

Includes, Excludes and Coding Notes

Excludes 1 — Not Coded HereFrom Q66

Mutually exclusive: these conditions are never reported together with this code.

  • reduction defects of feet (Q72.-)
  • valgus deformities (acquired) (M21.0-)
  • varus deformities (acquired) (M21.1-)
Excludes 2 — Not Included HereFrom Chapter Q00-Q99

Not part of this code; report both codes when the patient has both conditions.

  • inborn errors of metabolism (E70-E88)
NotesFrom Chapter Q00-Q99

Instructional notes from the ICD-10-CM tabular list.

  • Codes from this chapter are not for use on maternal records

More Specific Codes (10)

Q66.0Congenital talipes equinovarus→Q66.1Congenital talipes calcaneovarus→Q66.2Congenital metatarsus (primus) varus→Q66.3Other congenital varus deformities of feet→Q66.4Congenital talipes calcaneovalgus→Q66.5Congenital pes planus→Q66.6Other congenital valgus deformities of feet→Q66.7Congenital pes cavus→Q66.8Other congenital deformities of feet→Q66.9Congenital deformity of feet, unspecified→

Related condition guides

Documentation requirements, coding pitfalls and FAQs for conditions coded with Q66.