ICD-10-CM I77.81 is the diagnosis code for Aortic ectasia. This code falls under the section "Diseases of arteries, arterioles and capillaries" within Chapter 9 — Diseases of the circulatory system (I00-I99). It is a non-billable/non-specific ICD-10-CM code that should not be used for reimbursement. A more specific sub-code is required for billing. Medical coders and healthcare providers use this code to document and classify diagnoses in electronic health records, insurance claims, and clinical databases.
The following conditions should never be coded at the same time as I77.81. They are mutually exclusive:
Understanding where I77.81 sits in the ICD-10-CM classification helps ensure proper coding:
No, I77.81 is a non-billable/non-specific code. You should use a more specific sub-code for billing and reimbursement.
I77.81 is the ICD-10-CM diagnosis code for "Aortic ectasia". It is used by healthcare providers to classify and document this condition in medical records and insurance claims.
The parent code of I77.81 is I77.8 ("Other specified disorders of arteries and arterioles"). I77.81 provides a more specific classification within this category.
I77.81 is located in Section I70-I79 — "Diseases of arteries, arterioles and capillaries" within Chapter 9 of the ICD-10-CM Tabular List.
I77.81 has 4 sub-code(s) that provide more specific detail: I77.810, I77.811, I77.812, I77.819.
Use I77.81 when the patients documented diagnosis matches "Aortic ectasia" and the clinical documentation supports this level of specificity. Always verify with the latest ICD-10-CM guidelines and payer requirements.
The ICD-10-CM code for Aortic ectasia is I77.81.
No, I77.81 is non-billable. Use a more specific sub-code for primary diagnosis billing.
I77.81 is in Chapter 9 of the ICD-10-CM Tabular List.
Type 1 Excludes for I77.81 include: aortic aneurysm and dissection (I71.-).
Yes, I77.81 is a valid ICD-10-CM code for the 2026 fiscal year, subject to official CMS updates.