Q68.4 Congenital bowing of tibia and fibula

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

Applies from Q68 Other congenital musculoskeletal deformities

Excludes1 (never code together)

• reduction defects of limb(s) (Q71-Q73)

Excludes2 (not included here)

• congenital myotonic chondrodystrophy (G71.13)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 754.43 Congenital bowing of tibia and fibula

Code annotations containing back-references to Q68.4

Back-references to Q68

• 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 Q68.4

• Bowing › fibula › congenital
• Bowing › tibia › congenital

Nearby codes

• Q68 Other congenital musculoskeletal deformities
• Q68.0 Congenital deformity of sternocleidomastoid muscle
• Q68.1 Congenital deformity of finger(s) and hand
• Q68.2 Congenital deformity of knee
• Q68.3 Congenital bowing of femur
• Q68.4 Congenital bowing of tibia and fibula (this code)
• Q68.5 Congenital bowing of long bones of leg, unspecified
• Q68.6 Discoid meniscus
• Q68.8 Other specified congenital musculoskeletal deformities