ICD-10-CM Code H34.8320

Tributary (branch) retinal vein occlusion, left eye, with macular edema

Version 2021 Billable Code

Valid for Submission

H34.8320 is a billable code used to specify a medical diagnosis of tributary (branch) retinal vein occlusion, left eye, with macular edema. The code is valid for the fiscal year 2021 for the submission of HIPAA-covered transactions. The ICD-10-CM code H34.8320 might also be used to specify conditions or terms like macular retinal edema due to occlusion of branch of left retinal vein.

Short Description:Trib rtnl vein occlusion, left eye, with macular edema
Long Description:Tributary (branch) retinal vein occlusion, left eye, with macular edema


The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Macular retinal edema due to occlusion of branch of left retinal vein

Replacement Code

H348320 replaces the following previously assigned ICD-10 code(s):

  • H34.832 - Tributary (branch) retinal vein occlusion, left eye

Convert H34.8320 to ICD-9

  • 362.36 - Venous tributary occlus (Approximate Flag)

Code Classification

  • Diseases of the eye and adnexa (H00–H59)
    • Disorders of choroid and retina (H30-H36)
      • Retinal vascular occlusions (H34)

Code History

  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020
  • FY 2021 - No Change, effective from 10/1/2020 through 9/30/2021

Information for Patients

Retinal Disorders

The retina is a layer of tissue in the back of your eye that senses light and sends images to your brain. In the center of this nerve tissue is the macula. It provides the sharp, central vision needed for reading, driving and seeing fine detail.

Retinal disorders affect this vital tissue. They can affect your vision, and some can be serious enough to cause blindness. Examples are

  • Macular degeneration - a disease that destroys your sharp, central vision
  • Diabetic eye disease
  • Retinal detachment - a medical emergency, when the retina is pulled away from the back of the eye
  • Retinoblastoma - cancer of the retina. It is most common in young children.
  • Macular pucker - scar tissue on the macula
  • Macular hole - a small break in the macula that usually happens to people over 60
  • Floaters - cobwebs or specks in your field of vision

NIH: National Eye Institute

  • Amaurosis fugax (Medical Encyclopedia)
  • Central serous choroidopathy (Medical Encyclopedia)
  • Electroretinography (Medical Encyclopedia)
  • Fluorescein angiography (Medical Encyclopedia)
  • High blood pressure and eye disease (Medical Encyclopedia)
  • Home vision tests (Medical Encyclopedia)
  • Intravitreal injection (Medical Encyclopedia)
  • Retinal artery occlusion (Medical Encyclopedia)
  • Retinal vein occlusion (Medical Encyclopedia)

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