All ICD10 Codes
H34Not billable, use a more specific code below

Retinal vascular occlusions

In Disorders of choroid and retina (H30-H36), chapter 7: Diseases of the Eye and Adnexa

45 billable codes under H34: 29 are a CC; 24 map to HCC 298 (Severe Diabetic Eye Disease, Retinal Vein Occlusion, and Vitreous Hemorrhage).A CC or MCC (major CC) is a secondary diagnosis that raises the MS-DRG payment. An HCC counts toward a Medicare Advantage patient's risk score.

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Instructional notes

Excludes1: not coded here, use a different code

Official coding guidelines

From the ICD-10-CM Official Guidelines for Coding and Reporting, FY 2027 (CMS and NCHS). Links open the PDF at the right page.

Covers coding glaucoma by type, eye, and stage, including bilateral cases and stage changes, and coding blindness or low vision when the impairment category is undocumented.

Read Section I.C.7 (page 48)

All codes under H34

H34 can't be used on a claim. Pick a billable code below; grey headings group them.

H34 MS-DRGs

As the principal diagnosis, the billable codes under H34 group to MS-DRG 123, 124, or 125 (v44.0). Which one applies depends on procedures performed, secondary diagnoses (CC/MCC), and the patient's age and discharge status.

Other codes that refer to H34

Notes on these codes point to H34.

  • I74 Excludes2: ophthalmic embolism and thrombosis (H34.-)
  • I74 Excludes2: retinal embolism and thrombosis (H34.-)

About the condition

Plain-language background from MedlinePlus (National Library of Medicine), not coding guidance.

Retinal Disorders

Retinal disorders are conditions that affect the retina, the thin light-sensitive tissue at the back of your eye. The retina senses light and sends signals to your brain so you can see.

Read more about retinal disorders on MedlinePlus

Code history

Valid since FY2016, when ICD-10-CM took effect on October 1, 2015. No changes since.