Q25.44 Congenital dilation of aorta

ICD-10-CM Q25.44: Congenital dilation of aorta

ICD-10-CM code Q25.44 identifies congenital dilation of aorta, classified under other congenital malformations of aorta. The concept is active and represents a congenital abnormality or disease. This reference summarizes terminology records and related clinical context without providing personal medical advice or implying coverage. 1 3

Plain-language overview

Code Q25.44 denotes congenital dilation of aorta and is designated as an active terminology record in the ICD-10-CM version 2026 system, providing a standardized label for this diagnosis. 1

What this code represents

The concept Q25.44 is assigned semantic types of Congenital Abnormality and Disease or Syndrome, establishing it as a diagnosis or health-status concept rather than an external cause or injury classification. 1 3

Coding details

In the ICD-10-CM hierarchy, Q25.44 is a narrower concept under the parent code Q25.4, which covers other congenital malformations of aorta, confirming its placement within congenital circulatory system codes. 1

Documentation considerations

The official preferred name for Q25.44 is congenital dilation of aorta, and the terminology record includes a published abbreviation matching this exact diagnostic label. 1

Clinical context

A clinical reference describes coarctation of the aorta as a congenital cardiovascular anomaly characterized by a narrowing of the aortic lumen, typically located just distal to the origin of the left subclavian artery. 2

The clinical excerpt notes that coarctation of the aorta imposes an increased afterload on the left ventricle, often leading to left ventricular hypertrophy and heart failure if left untreated, highlighting distinct physiological impacts of aortic narrowing. 2

What the sources add

Terminology records from two distinct official domains confirm the code, preferred name, and semantic types for Q25.44, while a clinical reference provides context on different congenital aortic anomalies such as coarctation. 1 3 2

Coverage and utilization context

A third-party medical reference platform lists Q25.44 as congenital dilation of aorta within an ICD-10-CM lookup tool available for mobile devices and web, providing an additional access point for this code. 4

Questions to verify

Reviewers may verify whether clinical documentation describes aortic dilation versus coarctation, as the latter is characterized by aortic narrowing and carries distinct associations with bicuspid aortic valves and secondary hypertension. 2

Sources

1. ICD-10-CM Q25.44 terminology record — National Cancer Institute Enterprise Vocabulary Services; accessed 2026-07-27.
2. Bookshelf — ncbi.nlm.nih.gov; accessed 2026-07-27.
3. EVS Explore — evsexplore.semantics.cancer.gov; accessed 2026-07-27.
4. Q25.44 - Congenital dilation of aorta | ICD-10-CM — unboundmedicine.com; accessed 2026-07-27.