Poisoning by alpha-adrenocpt antagonists, undet, sequela

This code indicates a patient presenting with long-term effects or complications resulting from a past poisoning by an alpha-adrenoreceptor antagonist, where the intent of the poisoning (e.g., accidental, intentional self-harm, assault) could not be determined. These antagonists are medications that block alpha-adrenergic receptors, often used to treat conditions like hypertension or benign prostatic hyperplasia.

Use this code when documenting chronic conditions, disabilities, or other residual problems directly attributable to a previous, unclarified alpha-adrenoreceptor antagonist poisoning. This applies when the acute phase of the poisoning has resolved, but the patient continues to experience related health issues.

• Assign this code only for the sequelae (late effects) of the poisoning, not for the acute event itself.
• Ensure documentation clearly links the current condition to the prior alpha-adrenoreceptor antagonist poisoning.
• Always code the specific nature of the sequela first, followed by this external cause code.