Encounter for desensitization to allergens

This code signifies a patient's visit specifically for the administration of allergen immunotherapy, commonly known as allergy shots or desensitization. The goal of these encounters is to gradually reduce a patient's sensitivity to specific allergens over time.

Apply this code for office visits or outpatient encounters where a patient receives allergen extracts for desensitization purposes. This includes both initial and maintenance phases of immunotherapy. Do not use this code for diagnostic allergy testing.

• Always sequence this code as the primary diagnosis when the sole purpose of the encounter is allergen immunotherapy.
• Do not use this code for the preparation of allergen extracts; this code is for the administration.
• Consider an additional code for the specific allergy being treated if known and relevant to the encounter (e.g., J30.1 for allergic rhinitis due to pollen).