Sudden visual loss, bilateral

This code signifies a rapid and unexpected decrease or complete loss of vision affecting both eyes simultaneously. This condition typically develops acutely, often within minutes to hours, and is a medical emergency requiring immediate evaluation.

Apply this code when documentation clearly indicates a sudden onset of vision loss impacting both the right and left eyes. This diagnosis is supported by physician notes detailing the acute nature and bilateral involvement, often without a preceding history of chronic visual impairment.

• Ensure documentation specifies "sudden" or "acute" onset; chronic or gradual vision loss would require a different code.
• Verify that both eyes are affected; unilateral sudden vision loss codes are distinct.
• Consider sequencing this code as a primary diagnosis when it is the reason for the encounter, especially in emergency department settings.