Low vision r eye category 2, blindness left eye category 4

This code signifies a patient presenting with moderate low vision in their right eye, classified as category 2, and severe visual impairment or blindness in their left eye, classified as category 4. This indicates a significant disparity in visual acuity between the two eyes, with the left eye having a much more profound visual deficit.

This code is appropriate for documenting a patient's visual impairment when the right eye has a visual acuity between 20/70 and 20/200 (or equivalent field loss) and the left eye has a visual acuity worse than 20/400 to light perception (or equivalent field loss). Documentation should clearly state the visual acuity for each eye, often expressed as Snellen fractions or equivalent, and the specific categories of impairment.

• Ensure the medical record explicitly states the visual acuity for both the right and left eyes to support the distinct categories of impairment.
• Do not confuse this with codes for total blindness or less severe low vision categories; the specific categories for each eye are crucial.
• Always sequence this code after any underlying cause of the visual impairment, such as diabetic retinopathy or glaucoma.