Allergy status to other drug/meds/biol subst

This code indicates a patient's documented history of an allergic reaction to a drug, medicament, or biological substance that is not specifically categorized elsewhere. It signifies a past adverse immune response, not an active or acute allergic event. This status is crucial for future treatment planning to prevent re-exposure to the offending agent.

Use this code when a patient's medical record clearly documents a history of an allergy to a medication or biological product that doesn't have a more specific Z-code for that particular substance (e.g., penicillin, aspirin). This is a status code, so it should be reported to indicate a known allergy that influences current or future care decisions. It is often used in conjunction with codes for current conditions or encounters.

• Do not use this code for current or acute allergic reactions; those require codes from Chapter 19 (Injury, poisoning, and certain other consequences of external causes).
• Always search for a more specific Z-code for the drug allergy first (e.g., Z88.0 for penicillin allergy, Z88.6 for aspirin allergy).
• This code indicates a history of allergy; it does not represent an intolerance or adverse effect without an immune response.