Underdosing of unsp agents aff the cardiovascular sys, subs

This code signifies a patient's underdosing of a medication or substance that primarily impacts the cardiovascular system, leading to an adverse effect. The specific agent causing the underdosing is not identified. This code is used for encounters following the initial treatment of the underdosing event.

Use this code when documenting follow-up care for a patient who previously experienced an underdosing of an unspecified cardiovascular agent. This applies to situations where the patient did not take enough of their prescribed medication, or was given an insufficient dose, resulting in a cardiovascular issue.

• Always assign an additional code for the specific adverse effect or symptom experienced due to the underdosing.
• Ensure the encounter is a subsequent visit, not the initial treatment for the underdosing.
• If the specific agent is known, a more specific T46 code should be used instead.