H34.23 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
H34.231
Retinal artery branch occlusion, right eye
Billable
10
H34.232
Retinal artery branch occlusion, left eye
Billable
10
H34.233
Retinal artery branch occlusion, bilateral
Billable
10
H34.239
Retinal artery branch occlusion, unspecified eye
Billable