ICD-10-CM > H00-H59 > H30-H36 > H34 > H34.8 > H34.82 H34.82 Venous engorgement Non-Billable/Non-Specific Applicable To Incipient retinal vein occlusionPartial retinal vein occlusion Codes H34.821Venous engorgement, right eyeH34.822Venous engorgement, left eyeH34.823Venous engorgement, bilateralH34.829Venous engorgement, unspecified eye