Q26 ICD-10-CM Code: Congenital malformations of great veins
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Official description
Q26Congenital malformations of great veins
ICD-10-CM diagnosis code · United States clinical modification
Where Q26 sits
- 1
Chapter 17
Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
- 2
Section
Congenital malformations of the circulatory system (Q20-Q28)
- 3
Category Q26
Congenital malformations of great veins
- 4
Code Q26
Congenital malformations of great veins
Codes under Q26
Q26 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Q26.0Congenital stenosis of vena cavaQ26.1Persistent left superior vena cavaQ26.2Total anomalous pulmonary venous connectionQ26.3Partial anomalous pulmonary venous connectionQ26.4Anomalous pulmonary venous connection, unspecifiedQ26.5Anomalous portal venous connectionQ26.6Portal vein-hepatic artery fistulaQ26.8Other congenital malformations of great veinsQ26.9Congenital malformation of great vein, unspecifiedNotes for this code
Inclusion terms
No inclusion terms are listed for Q26.
Code first
No “code first” instruction is listed for Q26.
Use additional code
No “use additional code” instruction is listed for Q26.
Excludes1
Conditions that should not be reported together with this code.
No Excludes1 note is listed for Q26.
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for Q26.
Source and release
- Data release
- U.S. ICD-10-CM · FY 2027
- Effective date
- Oct 1, 2026
- Publisher
- Vero Scribe Inc.
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Frequently asked questions
What does ICD-10-CM code Q26 mean?
Q26 is the FY 2027 U.S. ICD-10-CM code for “Congenital malformations of great veins.”
Is Q26 a billable or specific ICD-10-CM code?
No. Q26 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is Q26 located in ICD-10-CM?
Q26 is listed in Chapter 17, Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1), within Congenital malformations of the circulatory system (Q20-Q28) (Q20–Q28), under category Q26, Congenital malformations of great veins.
What coding notes are listed for Q26?
No inclusion terms are listed for Q26 in this reference record. No code-first instruction is listed. No Excludes1 note is listed. No Excludes2 note is listed.