Adverse effect of other narcotics, initial encounter

This code signifies a patient experiencing an unintended and undesirable reaction to a narcotic medication, excluding opium, heroin, and other specified opioids. These adverse effects are typically non-allergic and can range from mild side effects to more severe complications, occurring when the drug is administered correctly.

Apply this code when documenting an adverse reaction to a narcotic that was properly prescribed and taken as directed, and the patient is presenting for the initial treatment of this reaction. This includes situations where the patient experiences expected but undesirable side effects, or unexpected non-allergic reactions to the medication.

• Ensure the documentation clearly distinguishes an adverse effect from poisoning, underdosing, or allergic reaction.
• Always sequence this code first, followed by codes for the specific manifestations of the adverse effect.
• Verify that the narcotic involved is not specifically classified elsewhere (e.g., opium, heroin) to ensure appropriate code selection.