Z91.013 Allergy to seafood

Name of the Condition

• Allergy to seafood (ICD-10 Code: Z91.013)

Summary

Allergy to seafood is a hypersensitivity reaction to proteins found in seafood, which can trigger immune responses ranging from mild to severe. This condition requires careful management to avoid exposure and prevent potentially life-threatening reactions.

Causes

Seafood allergies occur when the immune system mistakenly identifies seafood proteins as harmful, leading to an allergic response. The exact reason some individuals develop this allergy is not fully understood, but genetic and environmental factors may play a role.

Risk Factors

• Family history of allergies or asthma.
• Existing allergic conditions like eczema or hay fever.
• Frequent exposure to seafood products.
• Age, with adults more commonly affected than children.

Symptoms

• Hives, itching, or skin rash.
• Swelling of the lips, tongue, or throat.
• Gastrointestinal issues (e.g., nausea, vomiting, diarrhea).
• Difficulty breathing or wheezing.
• Anaphylaxis in severe cases.

Diagnosis

Diagnosis involves a combination of patient history, clinical evaluation, and confirmatory testing (e.g., skin prick tests, blood tests for seafood-specific IgE antibodies, and oral food challenges under medical supervision).

Treatment Options

• Strict avoidance of seafood and seafood-containing products.
• Antihistamines for mild reactions.
• Epinephrine auto-injectors for severe reactions.
• Allergen immunotherapy in select cases.

Prognosis and Follow-Up

Most individuals with seafood allergies manage symptoms through avoidance. Regular follow-up with an allergist is recommended to monitor for changes in sensitivity or new reactions. Long-term prognosis depends on adherence to avoidance strategies and preparedness for accidental exposure.

Complications

• Anaphylaxis, a severe and potentially fatal reaction.
• Cross-reactivity with other allergens (e.g., shellfish or fish).
• Anxiety or dietary restrictions impacting quality of life.

Lifestyle & Prevention

• Read food labels carefully to avoid hidden seafood ingredients.
• Inform restaurants and food providers of the allergy.
• Carry emergency medication (e.g., epinephrine) at all times.
• Consider wearing a medical alert bracelet.

When to Seek Professional Help

Seek immediate medical attention if symptoms of anaphylaxis occur (e.g., difficulty breathing, swelling, dizziness). Consult an allergist for diagnosis, management plans, or if reactions worsen over time.

Tips for Medical Coders

Document the specific type of seafood allergy (e.g., shellfish, fish) and any associated reactions or management strategies. Ensure the code Z91.013 is used only when the allergy to seafood is clearly documented and not confused with other food allergies. Include details about testing, treatment, or avoidance measures to support clinical accuracy.