Adverse effect of opth drugs and preparations, init

This code signifies an unintended, harmful reaction experienced by a patient due to the proper administration of a medication or substance intended for ophthalmic use. It specifically captures the initial presentation of such an adverse event, indicating that the patient is receiving active treatment for the reaction.

Apply this code when a patient presents with symptoms directly attributable to an adverse effect from an eye medication, such as an allergic reaction to eye drops or increased intraocular pressure from a steroid eye ointment. This code is appropriate for the first encounter where the adverse effect is identified and managed.

• Always sequence this code first when it represents the primary reason for the encounter.
• Ensure documentation clearly links the ophthalmic drug to the adverse effect.
• Do not use this code for poisoning, underdosing, or toxic effects from improper use; those have separate codes.