Underdosing of ophthalmological drugs and preparations, subs

This code signifies that a patient is experiencing an adverse effect or complication due to receiving an insufficient amount of an ophthalmological medication during a subsequent encounter. This underdosing could lead to the recurrence or worsening of the original eye condition the drug was intended to treat.

Use this code when documenting follow-up care for a patient who previously received an ophthalmological drug, but the dosage was inadequate, resulting in ongoing or exacerbated symptoms. This applies to situations where the patient did not receive enough of the prescribed eye drops, ointments, or other ocular preparations.

• Always assign an additional code for the specific adverse effect or complication resulting from the underdosing.
• Ensure the documentation clearly indicates that the underdosing occurred and that this is a subsequent encounter for managing its effects.
• Distinguish from poisoning (overdosing or wrong substance) or noncompliance (patient not taking medication as prescribed).