Allergy status to anesthetic agent

This code indicates a patient's documented history of an adverse reaction or hypersensitivity to an anesthetic agent. It signifies a known allergy that necessitates careful selection of anesthesia for future medical or surgical procedures.

Assign this code when a patient's medical record clearly states an allergy to a specific anesthetic, regardless of whether the patient is currently experiencing an allergic reaction. It is crucial for pre-operative assessments and when planning any procedure requiring anesthesia.

• Always sequence this code as a secondary diagnosis, following the code for the condition or procedure for which anesthesia is being considered.
• Do not use this code for current adverse effects or poisoning from anesthetic agents; those require codes from Chapter 19 (Injury, poisoning and certain other consequences of external causes).
• Ensure the specific anesthetic agent is documented in the patient's record to support the use of this general allergy status code.