Question:
Ohio Subscriber
Answer:
There is no CPT® code for the potential acuity meter (PAM) test, also known as the Guyton-Minkowski Potential Acuity Meter. Medicare carriers consider PAM to be an integral part of the evaluation and management service; therefore, they will not reimburse PAM separately from an eye exam or E/M visit.Eye specialists often use PAM to estimate potential vision prior to cataract surgery.
The basics:
The PAM projects an eye chart directly onto the retina, bypassing the cloudy lens, giving the optometrist a way to see how much the patient's vision may improve after surgery. Code 95930 (Visual evoked potential [VEP] testing central nervous system, checkerboard or flash) describes a neurological test in which electrodes measure the electrical activity in the visual pathways of the patient's brain. The VEP can evaluate conditions like optic neuritis, optic tumors and multiple sclerosis.