Q66.89 Other specified congenital deformities of feet

Billable ICD-10-CM code, FY2026. Exempt from present-on-admission (POA) reporting.

Applicable to

• Congenital asymmetric talipes
• Congenital clubfoot NOS
• Congenital talipes NOS
• Congenital tarsal coalition
• Hammer toe, congenital

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-)

MS-DRG index

Defines the logic of DRG(s) 564-566 in MDC 08.

Approximate ICD-9-CM (GEMs)

• 754.70 Talipes, unspecified (approximate)
• 754.79 Other deformities of feet (approximate)
• 755.66 Other anomalies of toes (approximate)
• 755.67 Anomalies of foot, not elsewhere classified (approximate)

Code annotations containing back-references to Q66.89

Back-references to Q66.89

• Type 1 Excludes: M21.5 Acquired clawhand, clubhand, clawfoot and clubfoot ("clubfoot, not specified as acquired (Q66.89)")

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 Q66.89

• Clawfoot (congenital)
• Clawtoe (congenital)
• Clubfoot (congenital)
• Coalition › calcaneo-scaphoid
• Coalition › tarsal
• Contraction (s), contracture, contracted › Achilles tendon › congenital
• Deformity › foot (acquired) › congenital NOS › specified type NEC
• Hammer toe (acquired) NEC › congenital
• Overlapping toe (acquired) › congenital (fifth toe)
• Overriding › toe (acquired) › congenital
• Pes (congenital) › adductus
• Short, shortening, shortness › tendon › Achilles (acquired) › congenital
• Talipes (congenital)
• Talipes (congenital) › asymmetric
• Talipes (congenital) › calcaneus
• Talipes (congenital) › equinus

Nearby codes

• Q66.72 Congenital pes cavus, left foot
• Q66.8 Other congenital deformities of feet
• Q66.80 Congenital vertical talus deformity, unspecified foot
• Q66.81 Congenital vertical talus deformity, right foot
• Q66.82 Congenital vertical talus deformity, left foot
• Q66.89 Other specified congenital deformities of feet (this code)
• Q66.9 Congenital deformity of feet, unspecified
• 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