Personal history of allergy to sulfonamides

This code indicates that a patient has a documented past adverse reaction or hypersensitivity to medications containing sulfonamides. This history is important for preventing future exposure and potential allergic responses. It does not signify an active allergy or current adverse event.

Use this code when a patient's medical record explicitly states a prior allergic reaction to sulfonamide-based drugs, such as certain antibiotics (e.g., sulfamethoxazole/trimethoprim) or diuretics. This is typically documented during patient intake, medication reconciliation, or when reviewing past medical history.

• Always verify the specific type of allergy; ensure it's to sulfonamides and not another drug class.
• This is a history code, so it's used to indicate a past event, not an active problem or current adverse drug reaction.
• Do not use this code if the patient is currently experiencing an adverse reaction to sulfonamides; instead, code the acute reaction.