I77810 - Widening or enlargement of the thoracic aorta (the main artery in the chest)

International Classification of Diseases

Last updated: 3/13/2026

What is a ICD-10 Code?

ICD-10 (International Classification of Diseases, 10th Revision) codes are used to classify and code all diagnoses, symptoms, and procedures recorded in association with hospital care. These codes provide a standardized way to track health conditions and their treatment outcomes.

Detailed Description

This code represents thoracic aortic ectasia, which is a condition where the thoracic aorta (the large main artery that carries blood from the heart through the chest) becomes widened or enlarged beyond its normal diameter. The thoracic aorta is the portion of the aorta located in the chest cavity. Ectasia refers to the abnormal stretching or dilation of a blood vessel. This condition falls under diseases of the circulatory system and specifically affects arteries and arterioles.

Additional Information

This is a diagnostic code used to classify a specific condition affecting the thoracic aorta. The actual treatment and management would depend on the severity and underlying cause of the ectasia.

Category

Diseases of the circulatory system - Other disorders of arteries and arterioles

Medical Specialty

Cardiology/Cardiovascular Surgery

Expected Costs

Your actual cost will depend on your insurance coverage, provider location, and specific circumstances.

What's Required Before This

  • Imaging studies (CT scan, MRI, or echocardiogram)
  • Cardiovascular evaluation

What to Expect After

  • Regular monitoring with imaging
  • Cardiovascular specialist follow-up
  • Blood pressure management

Why Understanding This Code Matters

On Your Medical Bill

This code appears on your medical bills to identify the specific service, procedure, drug, or medical diagnosis you received. Understanding what it means helps you verify you're being charged correctly and know what to expect.

For Your Health

Knowing what this code represents helps you understand your treatment plan, ask better questions during appointments, and track your healthcare journey more effectively.

Want This Level of Detail on All Your Claims?

Get detailed explanations for every medical code on your Medicare bills. Currently supporting Medicare only.