Underdosing of alpha-adrenoreceptor antagonists, subs encntr

This code indicates that a patient is experiencing the effects of taking less than the prescribed or recommended dose of an alpha-adrenoreceptor antagonist, such as prazosin or tamsulosin. This underdosing is occurring during a follow-up visit for the condition initially treated by the medication or for the underdosing itself. The patient may be experiencing a return or worsening of symptoms due to insufficient medication.

Use this code when a patient presents for ongoing management of a condition (e.g., hypertension, benign prostatic hyperplasia) that is inadequately controlled because they are not taking enough of their alpha-blocker. This applies to situations where the underdosing is identified or addressed during a subsequent encounter, not the initial presentation of the underdosing. It is also appropriate for follow-up visits specifically to monitor or adjust treatment for previously identified underdosing.

• Always sequence this code after the code for the condition being treated by the alpha-adrenoreceptor antagonist.
• Ensure the "D" seventh character is appropriate for a subsequent encounter; "A" is for initial, and "S" for sequela.
• Document the specific alpha-adrenoreceptor antagonist and the reason for underdosing if known (e.g., patient non-adherence, dosage error).