Personal history of anaphylaxis

This code indicates a patient's past medical history of a severe, life-threatening allergic reaction (anaphylaxis). It signifies that the patient has experienced anaphylaxis at some point in their life, even if they are not currently experiencing symptoms. This history is crucial for future medical management and risk assessment.

Use this code when documenting a patient's prior episode of anaphylaxis, regardless of the trigger or the time elapsed since the event. It is appropriate for patients who require ongoing vigilance for potential re-exposure to allergens or who are being evaluated for allergy management. This code should be used in conjunction with codes for current conditions or encounters.

• Do not use this code for current anaphylactic reactions; instead, use the appropriate T-code for the acute event.
• This code is for a personal history; do not use it for a family history of anaphylaxis.
• Always consider if a more specific history code related to the cause of anaphylaxis (e.g., food, drug) is available and appropriate, though Z87.892 is suitable when the specific cause is unknown or not being addressed in the current encounter.