Ophthalmic Coding Specialist Practice Test

In the context of billing for an assistant at surgery in retinal cases, the use of 67027 is appropriate because it specifically corresponds to retinal procedures that typically require the assistance of another medical professional. This code refers to the "vitrectomy, mechanical" which is involved in surgical interventions on the retina and may necessitate the assistance of an additional surgeon or surgical assistant to ensure proper execution of the complex techniques involved.

The other provided options refer to different types of procedures that do not pertain to the use of an assistant at surgery for retinal conditions. For instance, 66821 pertains to procedures related to the lens, while 68200 refers to the excision and repair of eyelid lesions, and 65400 is associated with the surgical management of pterygium. None of these codes captures the scope of work involved with retinal surgery that requires assistance, making 67027 the most relevant choice for this scenario.