T78.08 Anaphylactic reaction due to eggs

Name of the Condition

• Anaphylactic reaction due to eggs (ICD-10 Code: T78.08)

Summary

This code is used to document an anaphylactic reaction specifically triggered by eggs. Anaphylaxis is a severe, potentially life-threatening allergic reaction that requires immediate medical attention. The code applies when the reaction is directly linked to egg exposure and meets clinical criteria for anaphylaxis.

Causes

Anaphylactic reactions due to eggs occur when the immune system overreacts to proteins in eggs. The reaction is mediated by immunoglobulin E (IgE) antibodies, which release histamine and other chemicals, leading to rapid onset of symptoms. Both egg whites and yolks can trigger reactions, though egg whites are more commonly implicated.

Risk Factors

• Previous history of egg allergy or anaphylaxis
• Family history of allergic conditions
• Asthma or other atopic diseases
• Exposure to eggs or egg-containing products
• Delayed administration of epinephrine during prior reactions

Symptoms

• Rapid onset of hives, itching, or swelling (especially of the lips, tongue, or throat)
• Difficulty breathing, wheezing, or stridor
• Drop in blood pressure (hypotension) or dizziness
• Nausea, vomiting, or abdominal cramps
• Loss of consciousness or confusion

Diagnosis

Diagnosis is based on clinical presentation and patient history. Key criteria include acute onset of symptoms after egg exposure, involvement of multiple organ systems, and exclusion of other causes. Specific IgE testing or skin prick tests may confirm the allergy, but clinical judgment is essential.

Treatment Options

• Immediate administration of epinephrine (first-line treatment)
• Antihistamines or corticosteroids for adjunctive care
• Oxygen therapy or respiratory support if needed
• Monitoring in a medical setting for potential biphasic reactions

Prognosis and Follow-Up

With prompt treatment, most patients recover fully. Follow-up care includes referral to an allergist for long-term management, education on avoiding egg exposure, and consideration of an epinephrine auto-injector prescription. Regular monitoring is recommended to assess for changes in allergy severity.

Complications

• Respiratory failure or airway obstruction
• Cardiovascular collapse
• Biphasic reactions (recurrence of symptoms hours after initial treatment)
• Long-term anxiety or fear of food-related reactions

Lifestyle & Prevention

• Strict avoidance of eggs and egg-containing products
• Reading food labels carefully for hidden egg ingredients
• Informing restaurants and caregivers about the allergy
• Carrying an epinephrine auto-injector at all times
• Wearing medical identification (e.g., bracelet) indicating the allergy

When to Seek Professional Help

Seek immediate medical attention if symptoms of anaphylaxis occur, such as difficulty breathing, swelling of the throat, or dizziness. Even if symptoms improve after epinephrine, follow-up with a healthcare provider is necessary to prevent complications.

Tips for Medical Coders

Document the specific trigger (eggs) and clinical evidence supporting anaphylaxis (e.g., respiratory distress, hypotension) to justify code assignment. Ensure the code is not used for milder allergic reactions (e.g., urticaria without systemic involvement). Verify that the reaction meets anaphylaxis criteria (e.g., rapid onset, multi-system involvement) before applying this code.