Q26.8 – Other congenital malformations of great veins
ICD-10-CM 2027 diagnosis code · Congenital malformations of the circulatory system
ICD-10-CM code
Q26.8
- Code
Q26.8(claims format:Q268)- Description
- Other congenital malformations of great veins
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- Block
- Q20-Q28 Congenital malformations of the circulatory system
- Parent codes
- Q26
Notes for Q26.8
Applicable to:
- Absence of vena cava (inferior) (superior)
- Azygos continuation of inferior vena cava
- Persistent left posterior cardinal vein
- Scimitar syndrome
Index terms for Q26.8
Entries in the ICD-10-CM alphabetic index that lead to this code:
- Scimitar syndrome
- Syndrome, scimitar
- Absence, vena cava
- Agenesis, vena cava
- Absence, vein, great
- Agenesis, vein, great NEC
- Atresia, atretic, vena cava
- Anomaly, anomalous, venous return
- Atresia, atretic, vein NEC, great
- Hypoplasia, hypoplastic, vena cava
- Malposition, congenital, vena cava
- Hypoplasia, hypoplastic, vein, great
- Malposition, congenital, vein, great
- Azygos, continuation inferior vena cava
- Absence, superior vena cava, congenital
- Malformation, great, vein, specified type NEC
- Anomaly, anomalous, vein, great, specified NEC
- Persistence, persistent, left, posterior cardinal vein
- Persistence, persistent, sinus, venosus with imperfect incorporation in right auricle
Related codes in Q26
- Q26.0 – Congenital stenosis of vena cavaBillable
- Q26.1 – Persistent left superior vena cavaBillable
- Q26.2 – Total anomalous pulmonary venous connectionBillable
- Q26.3 – Partial anomalous pulmonary venous connectionBillable
- Q26.4 – Anomalous pulmonary venous connection, unspecifiedBillable
- Q26.5 – Anomalous portal venous connectionBillable
- Q26.6 – Portal vein-hepatic artery fistulaBillable
- Q26.9 – Congenital malformation of great vein, unspecifiedBillable
Frequently asked questions
What is ICD-10 code Q26.8?
Q26.8 is the ICD-10-CM code for other congenital malformations of great veins, in the block Q20-Q28 (Congenital malformations of the circulatory system).
Is Q26.8 a billable code?
Yes. Q26.8 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does Q26.8 belong to?
It belongs to category Q26 – Congenital malformations of great veins.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.