Underdosing of agents aff the cardiovascular sys, subs

This code signifies a patient's insufficient intake or cessation of a medication primarily intended to treat cardiovascular conditions, leading to adverse effects or a worsening of their underlying heart or circulatory issues. It indicates that the patient is experiencing problems because they are not receiving enough of their prescribed cardiovascular drug.

Apply this code when documenting a patient visit for complications arising from not taking enough of their cardiovascular medication, such as beta-blockers, ACE inhibitors, or antiarrhythmics. This is specifically for a subsequent encounter, meaning the patient is returning for follow-up care related to this underdosing event.

• Always use an additional code to specify the nature of the adverse effect or complication resulting from the underdosing.
• Ensure documentation clearly states "underdosing" and identifies the cardiovascular medication involved.
• Verify the encounter type is "subsequent" (D) and not initial (A) or sequela (S).