Abnormal electroretinogram [ERG]

This code indicates an abnormal result from an electroretinogram (ERG) test, specifically for the right eye. An ERG measures the electrical responses of the retina's light-sensitive cells (photoreceptors and other retinal cells) to light stimuli, assessing retinal function.

Use this code when diagnostic testing reveals an abnormal ERG tracing in the patient's right eye. This is typically documented in the ERG report or physician's interpretation, indicating retinal dysfunction or disease affecting the right eye.

• Ensure the documentation explicitly states the abnormality is in the right eye.
• Do not use this code if the abnormality is in the left eye (R94.112) or both eyes (R94.113).
• This code represents an abnormal test finding; code the underlying retinal disease or condition as the primary diagnosis if known.