Q22.9 Congenital malformation of tricuspid valve, unspecified

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

MS-DRG index

Defines the logic of DRG(s) 306-307 in MDC 05.

Approximate ICD-9-CM (GEMs)

• 746.1 Tricuspid atresia and stenosis, congenital (approximate)

Code annotations containing back-references to Q22.9

Back-references to Q22.9

• Type 1 Excludes: I36 Nonrheumatic tricuspid valve disorders ("tricuspid valve disorders specified as congenital (Q22.4, Q22.8, Q22.9)")

Back-references to Q22

• Type 2 Excludes: I08 Multiple valve diseases ("multiple valve disease specified as nonrheumatic (I34.-, I35.-, I36.-, I37.-, I38.-, Q22.-, Q23.-, Q24.8-)")
• Code Also: I27.21 Secondary pulmonary arterial hypertension ("congenital heart disease (Q20-Q28)")
• Type 2 Excludes: P29 Cardiovascular disorders originating in the perinatal period ("congenital malformations of the circulatory system (Q20-Q28)")
• Code Also: Z71.87 Encounter for pediatric-to-adult transition counseling ("congenital malformations of the circulatory system (Q20-Q28)")

Diagnosis Index entries for Q22.9

• Anomaly, anomalous (congenital) (unspecified type) › tricuspid (leaflet) (valve)
• Malformation (congenital) › tricuspid valve

Nearby codes

• Q22.3 Other congenital malformations of pulmonary valve
• Q22.4 Congenital tricuspid stenosis
• Q22.5 Ebstein's anomaly
• Q22.6 Hypoplastic right heart syndrome
• Q22.8 Other congenital malformations of tricuspid valve
• Q22.9 Congenital malformation of tricuspid valve, unspecified (this code)