Q76.6 Other congenital malformations of ribs

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis. Exempt from present-on-admission (POA) reporting.

Applicable to

• Accessory rib
• Congenital absence of rib
• Congenital fusion of ribs
• Congenital malformation of ribs NOS

Excludes1 (never code together)

• short rib syndrome (Q77.2)

Applies from Q76 Congenital malformations of spine and bony thorax

Excludes1 (never code together)

• congenital musculoskeletal deformities of spine and chest (Q67.5-Q67.8)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 756.3 Other anomalies of ribs and sternum (approximate)

Code annotations containing back-references to Q76.6

Back-references to Q76

• 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 Q76.6

• Absence (of) (organ or part) (complete or partial) › rib (acquired) › congenital
• Accessory (congenital) › rib
• Agenesis › rib
• Anomaly, anomalous (congenital) (unspecified type) › rib
• Bifurcation (congenital) › rib
• Deformity › rib (acquired) › congenital
• Extra › rib
• Fusion, fused (congenital) › ribs
• High › thoracic rib
• Hypoplasia, hypoplastic › rib
• Malposition › congenital › rib (cage)
• Supernumerary (congenital) › rib

Nearby codes

• Q76.427 Congenital lordosis, lumbosacral region
• Q76.428 Congenital lordosis, sacral and sacrococcygeal region
• Q76.429 Congenital lordosis, unspecified region
• Q76.49 Other congenital malformations of spine, not associated with scoliosis
• Q76.5 Cervical rib
• Q76.6 Other congenital malformations of ribs (this code)
• Q76.7 Congenital malformation of sternum
• Q76.8 Other congenital malformations of bony thorax
• Q76.9 Congenital malformation of bony thorax, unspecified