Blindness r eye category 4, blindness left eye category 4

This code signifies profound bilateral vision impairment where both the right and left eyes are classified as having "Category 4" blindness according to the World Health Organization (WHO) definition. This typically corresponds to severe visual impairment with a visual acuity of less than 20/400 to light perception, or a visual field of less than 10 degrees from the point of fixation.

Use this code when documentation clearly indicates bilateral blindness at the Category 4 level for both eyes. This applies to patients with severe, non-correctable vision loss in both eyes, often due to conditions like advanced glaucoma, diabetic retinopathy, or macular degeneration. Supporting documentation should include visual acuity measurements, visual field assessments, and an ophthalmologist's diagnosis of Category 4 blindness for each eye.

• Ensure documentation specifies "Category 4" blindness for both the right and left eyes.
• Do not use this code if the level of blindness differs between the eyes; instead, use separate codes for each eye's specific category.
• Verify that the visual acuity and/or visual field measurements align with the WHO definition of Category 4 blindness.