Q25.1 Coarctation of aorta

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

• Coarctation of aorta (preductal) (postductal)
• Stenosis of aorta

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 747.10 Coarctation of aorta (preductal) (postductal)

Code annotations containing back-references to Q25.1

Back-references to Q25

• 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 Q25.1

• Anomaly, anomalous (congenital) (unspecified type) › aorta (arch) NEC › coarctation (preductal) (postductal)
• Coarctation › aorta (preductal) (postductal)
• Malformation (congenital) › aorta › coarctation (preductal) (postductal)
• Malformation (congenital) › aorta › stenosis
• Stenosis, stenotic (cicatricial) › aorta (ascending) (supraventricular) (congenital)
• Stricture › aorta (ascending) (congenital)

Nearby codes

• Q25 Congenital malformations of great arteries
• Q25.0 Patent ductus arteriosus
• Q25.1 Coarctation of aorta (this code)
• Q25.2 Atresia of aorta
• Q25.21 Interruption of aortic arch
• Q25.29 Other atresia of aorta
• Q25.3 Supravalvular aortic stenosis
• Q25.4 Other congenital malformations of aorta