Underdosing of unsp agents aff the cardiovascular sys, init

This code signifies a patient experiencing adverse effects due to taking less than the prescribed or recommended dose of a medication intended to treat a cardiovascular condition, where the specific agent is not documented. The underdosing has resulted in a negative health outcome related to their heart or circulatory system.

Apply this code when a patient presents with symptoms or worsening of a cardiovascular condition because they have not taken enough of their heart medication, and the exact drug is unknown or not specified in the medical record. This code is appropriate for the initial visit where the underdosing is identified and treated.

• Always sequence this code after the code(s) for the specific cardiovascular condition being treated.
• If the specific cardiovascular agent is known, a more specific underdosing code from categories T46.0-T46.8 should be used instead.
• Ensure documentation clearly states "underdosing" and links it to a cardiovascular medication and an adverse effect.