Q66.21 Congenital metatarsus primus varus

Non-billable header with 3 child codes.

Applies from Q66 Congenital deformities of feet

Excludes1 (never code together)

• reduction defects of feet (Q72.-)
• valgus deformities (acquired) (M21.0-)
• varus deformities (acquired) (M21.1-)

Codes under Q66.21

• Q66.211 Congenital metatarsus primus varus, right foot
• Q66.212 Congenital metatarsus primus varus, left foot
• Q66.219 Congenital metatarsus primus varus, unspecified foot

Approximate ICD-9-CM (GEMs)

• 754.52 Metatarsus primus varus

Code annotations containing back-references to Q66.21

Back-references to Q66

• Type 1 Excludes: M20 Acquired deformities of fingers and toes ("congenital deformities and malformations of fingers and toes (Q66.-, Q68-Q70, Q74.-)")
• Type 1 Excludes: M21 Other acquired deformities of limbs ("congenital deformities and malformations of limbs (Q65-Q66, Q68-Q74)")
• Type 1 Excludes: M24.3 Pathological dislocation of joint, not elsewhere classified ("congenital dislocation or displacement of joint- see congenital malformations and deformations of the musculoskeletal system (Q65-Q79)")
• Type 2 Excludes: M95 Other acquired deformities of musculoskeletal system and connective tissue ("congenital malformations and deformations of the musculoskeletal system (Q65-Q79)")

Diagnosis Index entries for Q66.21

• Metatarsus, metatarsal › varus (congenital) › primus
• Primus varus

Nearby codes

• Q66.1 Congenital talipes calcaneovarus
• Q66.10 Congenital talipes calcaneovarus, unspecified foot
• Q66.11 Congenital talipes calcaneovarus, right foot
• Q66.12 Congenital talipes calcaneovarus, left foot
• Q66.2 Congenital metatarsus (primus) varus
• Q66.21 Congenital metatarsus primus varus (this code)
• Q66.211 Congenital metatarsus primus varus, right foot
• Q66.212 Congenital metatarsus primus varus, left foot
• Q66.219 Congenital metatarsus primus varus, unspecified foot
• Q66.22 Congenital metatarsus adductus
• Q66.221 Congenital metatarsus adductus, right foot