T783XXA - Severe allergic swelling of face, lips, throat, or other body parts - first visit for this condition

International Classification of Diseases

Last updated: 10/3/2025

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

Angioneurotic edema, also called angioedema, is a type of allergic reaction that causes deep swelling in the skin and mucous membranes, most commonly affecting the face, lips, eyelids, tongue, and throat. This swelling occurs beneath the surface of the skin and can develop rapidly. The 'initial encounter' designation means this is the first time you're receiving medical care for this particular episode of angioedema. This condition can be caused by allergic reactions to foods, medications, or other substances, and may require immediate medical attention especially if it affects breathing or swallowing.

Additional Information

This is a potentially serious condition that can affect breathing if swelling occurs in the throat or airway. Patients should seek immediate medical attention for facial or throat swelling, especially if accompanied by difficulty breathing or swallowing.

Category

Allergic and immunologic conditions

Medical Specialty

Emergency Medicine, Allergy/Immunology, Internal Medicine

Expected Costs

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

What's Required Before This

  • Typically requires immediate medical evaluation
  • May need allergy testing to identify triggers

What to Expect After

  • Allergy specialist consultation may be recommended
  • Identification and avoidance of triggering substances
  • Emergency action plan development
  • Possible prescription of emergency medications like epinephrine

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.

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