Adverse effect of unsp nonopi analgs/antipyr/antirheu, init

This code signifies an undesirable or harmful reaction experienced by a patient due to the use of a non-opioid pain reliever, fever reducer, or anti-inflammatory medication, where the specific drug causing the reaction is not documented. This reaction occurred during the initial phase of treatment or exposure to the medication.

This code is appropriate when a patient presents with an adverse effect (e.g., rash, gastrointestinal upset, kidney dysfunction) from a non-opioid analgesic, antipyretic, or antirheumatic drug, and the specific medication is unknown or not specified in the medical record. It should be used for the initial encounter related to this adverse event.

• Always sequence this code after the code for the specific manifestation of the adverse effect.
• Ensure documentation clearly indicates an adverse effect, not poisoning or underdosing.
• Avoid using this code if the specific non-opioid drug is identified; instead, use the more specific T39.0-T39.8 category codes.