Underdosing of ophthalmological drugs and preparations, init

This code signifies a patient presenting with adverse effects or complications due to receiving an insufficient dose of a medication intended for the eye. This underdosing could lead to the original ophthalmic condition not improving, worsening, or new symptoms arising from inadequate treatment. It indicates that the patient is currently receiving active treatment for the consequences of this underdosing.

Apply this code when a patient's ophthalmic condition is poorly controlled or exacerbated because they did not receive the prescribed or appropriate amount of an eye medication. This includes situations where a patient self-administered too little, or a healthcare provider administered an insufficient dose. This code is appropriate for the initial encounter where the underdosing is identified and managed.

• Always assign an additional code for the specific ophthalmic condition that is being undertreated.
• Ensure documentation clearly states "underdosing" and specifies the ophthalmic drug class involved.
• This "A" seventh character indicates the initial encounter for the underdosing event, not necessarily the first time the patient has seen the provider.