Adverse effect of beta-adrenoreceptor antagonists, init

This code signifies an undesirable or harmful reaction experienced by a patient due to the therapeutic use of a beta-blocker medication. These adverse effects can range from mild to severe and occur during the initial period of treatment or exposure to the drug.

Apply this code when a patient presents with symptoms directly attributable to an adverse reaction from a beta-blocker, such as bradycardia, hypotension, bronchospasm, or fatigue, and this is the first time the patient is being seen for this specific adverse event. This is appropriate for initial evaluations, diagnostic workups, and the beginning of treatment for the adverse effect.

• Always sequence this code first if it is the primary reason for the encounter.
• Remember to also code the specific manifestation of the adverse effect (e.g., R00.1 for bradycardia).
• Distinguish carefully between adverse effect (therapeutic use) and poisoning (incorrect use or overdose).