Retinal artery branch occlusion, unspecified eye

This code signifies a blockage in one of the smaller arteries branching off the main retinal artery, leading to impaired blood flow and potential vision loss in the affected part of the retina. The specific eye involved is not documented or specified.

Apply this code when documentation confirms a retinal artery branch occlusion, but the medical record does not specify whether it affects the right or left eye. This is appropriate for initial diagnoses or when laterality is unknown.

• Do not use this code if laterality (right or left eye) is documented; instead, use the more specific H34.231 (right eye) or H34.232 (left eye).
• Ensure the documentation clearly states "branch occlusion" to differentiate from central retinal artery occlusion (H34.1-).
• Consider any associated visual disturbances or underlying systemic conditions for additional coding.