Anaphylactic reaction due to tree nuts and seeds, init

This code identifies an acute, severe, and potentially life-threatening systemic allergic reaction triggered by exposure to tree nuts or seeds. The reaction involves multiple body systems and can manifest rapidly with symptoms such as hives, swelling, difficulty breathing, and a drop in blood pressure.

Assign this code when documenting the initial presentation and treatment of a patient experiencing anaphylaxis specifically caused by ingestion or contact with tree nuts or seeds. This includes reactions to almonds, walnuts, pecans, cashews, pistachios, Brazil nuts, hazelnuts, and other similar allergens.

• Ensure documentation clearly links the anaphylactic reaction to tree nuts or seeds as the causative agent.
• This "initial encounter" code is used for the entire period a patient is receiving active treatment for the anaphylactic reaction.
• Do not use this code for allergic reactions that are not anaphylactic (e.g., localized rash) or for reactions to peanuts (which are legumes, not tree nuts).