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Q26.8

✓ Billable

Other congenital malformations of great veins

Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)

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Also Known As

Absence of vena cava (inferior) (superior)Azygos continuation of inferior vena cavaPersistent left posterior cardinal veinScimitar syndrome
✓ No additional coding notes for Q26.8

Clinical Description

ICD-10-CM code Q26.8 represents other congenital malformations of great veins. This code falls under the Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0) classification. It is a billable/specific code valid for HIPAA-covered transactions as of October 1, 2025 (FY2026). This code can be used to indicate a diagnosis for reimbursement purposes on insurance claims.

This is a 5-character code at the 4th level of specificity. This is the most specific code available in this subcategory.

Frequently Asked Questions

What is ICD-10 code Q26.8?

ICD-10-CM code Q26.8 is "Other congenital malformations of great veins". It belongs to the category: Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0).

Is Q26.8 a billable ICD-10 code?

Yes, Q26.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.

Related Codes in Q26

Other codes in the same category that may be relevant for differential coding:

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 fistulaQ26.9Congenital malformation of great vein, unspecified

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Code Information

CodeQ26.8
BillableYes
ParentQ26
CategoryCongenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Excludes10 rule(s)
Excludes20 note(s)

Data Source

CMS ICD-10-CM 2026 Tabular List

Updated October 1, 2025 (FY2026)