Poisoning by coronary vasodilators, accidental, subs

This code signifies an accidental overdose or adverse reaction to a coronary vasodilator during a follow-up visit. The patient is experiencing ongoing effects or complications from an unintentional exposure to medications like nitrates or calcium channel blockers, which are used to widen blood vessels supplying the heart.

Apply this code when a patient presents for continued care, monitoring, or treatment of symptoms stemming from an accidental poisoning by a coronary vasodilator. This includes scenarios where the patient is recovering from the initial event, managing residual side effects, or undergoing further diagnostic workup related to the poisoning.

• Always use in conjunction with an external cause code (V00-Y99) to specify the circumstances of the poisoning.
• Ensure the encounter is for follow-up care after the initial treatment of the poisoning, indicated by the "D" seventh character.
• Verify the substance involved is specifically a coronary vasodilator; other cardiovascular agents have different codes.