Underdosing of expectorants, subsequent encounter

This code indicates that a patient is experiencing adverse effects or complications because they did not take enough of a prescribed expectorant medication. This underdosing is being addressed during a follow-up visit after initial treatment for the underdosing or its effects. Expectorants are used to help clear mucus from the airways.

Use this code when a patient presents for ongoing management or evaluation of symptoms related to insufficient expectorant intake, such as persistent cough, increased mucus production, or respiratory congestion, and this is not the initial encounter for this specific underdosing event. This applies to situations where the patient intentionally or unintentionally took less than the prescribed dose.

• Requires an additional code to specify the adverse effect or complication resulting from the underdosing.
• Distinguish from initial encounters (A) or sequela (S) encounters for underdosing.
• Ensure documentation clearly supports that this is a subsequent encounter for the underdosing event.