Allergy status to analgesic agent

This code indicates a patient's documented history of an adverse immunological reaction to a medication intended to relieve pain. This reaction is distinct from a mere side effect or intolerance, implying a true allergic response.

Assign this code when a patient's medical record clearly states an allergy to an analgesic, such as NSAIDs, opioids, or acetaminophen. It is used to flag this critical information for future prescribing and treatment decisions.

• Always sequence this code as a secondary diagnosis, as it describes a status, not a current condition requiring treatment.
• Ensure the documentation specifies an "allergy" and not just an adverse effect or intolerance, which would be coded differently.
• Do not use this code if the patient is currently experiencing an adverse reaction to an analgesic; instead, code the specific adverse effect.