Poisoning by alpha-adrenocpt antagonists, accidental, init

This code signifies an accidental overdose or adverse reaction to alpha-adrenergic blocking agents, such as prazosin or tamsulosin, resulting in toxic effects. These medications are typically used to treat hypertension or benign prostatic hyperplasia. The "initial encounter" indicates the patient is receiving active treatment for the poisoning.

Apply this code when a patient presents to an emergency department or clinic with symptoms of alpha-blocker toxicity, such as severe hypotension, dizziness, or syncope, due to an unintentional ingestion or incorrect dosage. This code is appropriate for the first visit related to this specific poisoning event.

• Ensure documentation clearly states the poisoning was accidental and not intentional self-harm or assault.
• Always code any associated manifestations of the poisoning, such as hypotension (I95.1) or syncope (R55), as additional diagnoses.
• Do not use this code for adverse effects occurring during therapeutic use without evidence of poisoning; instead, use codes from the T36-T50 range with the appropriate fifth or sixth character for adverse effect.