Acquired night blindness

This code signifies a patient's inability to see well in low light or darkness that developed after birth. It indicates a non-congenital impairment of scotopic vision, often making activities like driving at night or navigating dimly lit environments difficult. This condition is distinct from congenital forms of night blindness.

Assign this code when documentation explicitly states "acquired night blindness" or describes a patient's new onset or worsening difficulty with vision in dim light. This diagnosis is supported by patient history, ophthalmological examination findings, and often electroretinography results confirming impaired rod function.

• Differentiate from congenital night blindness (H53.60, H53.61) based on onset.
• Look for underlying causes, such as vitamin A deficiency (E50.5) or retinal diseases, and code them additionally if documented.
• Ensure the documentation specifies "acquired" to avoid confusion with unspecified night blindness.