Know the guidelines for coding glaucoma tests

When medically necessary, it is appropriate to perform and report tests such as visual fields and optical coherence tomography in the postoperative period of cataract surgery, trabeculectomy, or other surgical procedures. A variety of testing devices all fall under that rubric, including a retinal scanning system (Optical Coherence Tomography Retinal Scanner, Carl Zeiss Meditec), a nerve fiber analysis system (GDx Nerve Fiber Analyzer, Carl Zeiss Meditec), an optic disc analysis system (Heidelberg Retina Tomograph, Heidelberg Engineering), and an imaging system that maps and measures retinal thickness and disc topography (Retinal Thickness Analyzer, Talia Technology).