T78.02
Anaphylactic reaction due to shellfish (crustaceans)
Clinical Classification Guidelines
Medical Intelligence & Overview
Anaphylactic reaction due to shellfish (crustaceans), classified under ICD-10 code T78.02, is a severe allergic response that can occur rapidly after exposure to shellfish. Shellfish, including crustaceans such as shrimp, crab, and lobster, are common food allergens. When someone with a shellfish allergy is exposed to these foods, their immune system overreacts, leading to potentially life-threatening symptoms. Recognizing the signs and understanding the causes of this allergic reaction are crucial for managing safety and seeking prompt medical intervention.
Causes & Symptoms
Clinical Causes: Consuming shellfish products containing crustaceans Accidental ingestion of shellfish cross-contaminated in foods Inhalation of seafood vapors or aerosols in some cases Handling shellfish without proper hygiene, leading to skin contact Previous allergy development due to genetic or environmental factors
Key Symptoms: Difficulty breathing or shortness of breath Swelling of the face, lips, tongue, or throat (angioedema) Hives or widespread skin rash Rapid drop in blood pressure, leading to dizziness or fainting Feeling of warmth or flushing Nausea, vomiting, or abdominal cramps Loss of consciousness in severe cases
Diagnostic & Treatment
Diagnosis Path: Diagnosis is primarily based on clinical history and the rapid onset of symptoms following shellfish exposure. Doctors may perform skin prick tests or blood tests like specific IgE antibody testing to confirm shellfish allergies. Additionally, an allergist might recommend an oral food challenge under medical supervision for definitive diagnosis. Recognizing the pattern of symptoms after shellfish contact is key to accurate diagnosis.
Treatment Protocols: Immediate treatment of anaphylactic reactions involves the prompt administration of epinephrine via injection, which can quickly reverse symptoms. Additional measures include positioning the patient to maintain airway patency, administering antihistamines and corticosteroids to reduce allergic responses, and providing oxygen therapy if breathing is compromised. Post-emergency, patients are often advised to carry an epinephrine auto-injector and avoid shellfish exposure altogether. Long-term management involves allergist-led strategies, including education on avoiding shellfish and recognizing early signs of allergic reactions.
Clinical Advice & FAQs
Billing Guidance
Is T78.02 a billable ICD-10 code?
Yes, T78.02 is a specific, billable code that can be used to indicate a diagnosis for reimbursement purposes.
Documentation
How do I report T78.02?
Clinical documentation must specify the nature of Anaphylactic reaction due to shellfish (crustaceans) and any associated comorbidities for accurate reporting.
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