Adverse effect of pyrazolone derivatives, subs encntr

This code signifies a patient experiencing an unintended and undesirable reaction to a medication belonging to the pyrazolone derivative class, such as metamizole or propyphenazone. The adverse effect is occurring during a follow-up visit for the initial treatment of the reaction.

Apply this code when documenting a patient presenting for continued management or monitoring of an adverse effect from a pyrazolone derivative, after the initial treatment has already been provided. This includes situations where the patient is still recovering, experiencing lingering symptoms, or undergoing further diagnostic workup related to the drug reaction.

• Requires an additional code to identify the specific adverse effect (e.g., rash, agranulocytosis).
• Distinguish from initial encounter (A) or sequela (S) for appropriate encounter type.
• Ensure the medical record clearly documents the pyrazolone derivative as the causative agent.