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Q66.9

Congenital deformity of feet, unspecified

Not billable — category only FY2026 2025-10-01 → 2026-09-30
This is the unspecified option. 9 more specific codes sit alongside it. Worth checking whether the documentation supports one of them.
Exclusions 3 never code together
Q66code
Excludes1
  • reduction defects of feet (Q72.-)Q72.-
  • valgus deformities (acquired) (M21.0-)M21.0-
  • varus deformities (acquired) (M21.1-)M21.1-

Excludes1 — never code together. The excluded condition and this one are mutually exclusive.

Instructional notes

No further instructional notes apply.

Index entries leading here 3
  • Malposition
  • Deformity Q89.9
    • toe (acquired) M20.6
    • metatarsus (acquired) — see Deformity, foot
    • foot (acquired) — see also Deformity, limb, lower leg
  • Distortion (s) (congenital)
Alongside this code 9 same parent — Q66
Q66.0 Congenital talipes equinovarus category Q66.1 Congenital talipes calcaneovarus category Q66.2 Congenital metatarsus (primus) varus category Q66.3 Other congenital varus deformities of feet category Q66.4 Congenital talipes calcaneovalgus category Q66.5 Congenital pes planus category Q66.6 Other congenital valgus deformities of feet Q66.7 Congenital pes cavus category Q66.8 Other congenital deformities of feet category
Subordinate codes 3
Q66.90 Congenital deformity of feet, unspecified, unspecified foot Q66.91 Congenital deformity of feet, unspecified, right foot Q66.92 Congenital deformity of feet, unspecified, left foot
Additional references
AHA Coding Clinic® Licence required

Official coding advice for this code. Published by the American Hospital Association. Not included in this installation.

Risk adjustment

Maps to no condition category in any loaded model.

Presence is a property of the code. Untick a model to hide it everywhere.

This code

Billable
no
Code set
FY2026
Parent
Q66
Block
Q65-Q79
Siblings
9
Subordinate
3

Present FY2024–FY2027.