Q25.79 Other congenital malformations of pulmonary artery

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.

Applicable to

• Aberrant pulmonary artery
• Agenesis of pulmonary artery
• Congenital aneurysm of pulmonary artery
• Congenital anomaly of pulmonary artery
• Hypoplasia of pulmonary artery

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 747.39 Other anomalies of pulmonary artery and pulmonary circulation (approximate)

Code annotations containing back-references to Q25.79

Back-references to Q25.79

• Type 1 Excludes: I28.1 Aneurysm of pulmonary artery ("congenital aneurysm (Q25.79)")
• Type 2 Excludes: Q28 Other congenital malformations of circulatory system ("congenital pulmonary aneurysm (Q25.79)")

Back-references to Q25.7

• Type 2 Excludes: Q27 Other congenital malformations of peripheral vascular system ("anomalies of pulmonary artery (Q25.5-Q25.7)")

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 Q25.79

• Aberrant (congenital) › artery (peripheral) › pulmonary
• Abnormal, abnormality, abnormalities › pulmonary › artery, congenital
• Absence (of) (organ or part) (complete or partial) › artery (congenital) (peripheral) › pulmonary
• Agenesis › artery (peripheral) › pulmonary
• Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) › congenital (peripheral) › pulmonary
• Anomaly, anomalous (congenital) (unspecified type) › artery (peripheral) › pulmonary NEC
• Anomaly, anomalous (congenital) (unspecified type) › origin › artery › pulmonary
• Anomaly, anomalous (congenital) (unspecified type) › pulmonary › artery NEC
• Hypoplasia, hypoplastic › artery (peripheral) › pulmonary
• Malformation (congenital) › pulmonary › artery › specified type NEC
• Malposition › congenital › artery (peripheral) › pulmonary

Nearby codes

• Q25.5 Atresia of pulmonary artery
• Q25.6 Stenosis of pulmonary artery
• Q25.7 Other congenital malformations of pulmonary artery
• Q25.71 Coarctation of pulmonary artery
• Q25.72 Congenital pulmonary arteriovenous malformation
• Q25.79 Other congenital malformations of pulmonary artery (this code)
• Q25.8 Other congenital malformations of other great arteries
• Q25.9 Congenital malformation of great arteries, unspecified