2027 ICD-10-CM Diagnosis Code H34Retinal vascular occlusions

ICD-10-CM Codes›H00–H59›H30-H36›H34

ICD-10-CM H34
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H34 is a non-billable ICD-10-CM category code for retinal vascular occlusions, so it cannot be submitted on claims. Use a more specific code from this category instead, such as H34.00, H34.01, H34.02, and H34.03.

Code Identity

ICD-10-CM Code
H34
Billable Status
No — Non-Billable Category
Code Describes
Retinal vascular occlusions
Short Description
Retinal vascular occlusions
Same as the full description in the CMS dataset.
Chapter
H30-H36
Disorders of choroid and retina

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH30-H36Disorders of choroid and retina
CategoryH34Retinal vascular occlusions
This CodeH34Retinal vascular occlusions

Specific Coding for Retinal vascular occlusionsOverview

Non-specific codes like H34 require more characters. Use one of these billable codes instead:

  • H34.0 for Transient retinal artery occlusion

  • Use H34.00 for Transient retinal artery occlusion, unspecified eye

  • Use H34.01 for Transient retinal artery occlusion, right eye

  • Use H34.02 for Transient retinal artery occlusion, left eye

  • Use H34.03 for Transient retinal artery occlusion, bilateral

  • H34.1 for Central retinal artery occlusion

  • Use H34.10 for Central retinal artery occlusion, unspecified eye

  • Use H34.11 for Central retinal artery occlusion, right eye

  • Use H34.12 for Central retinal artery occlusion, left eye

  • Use H34.13 for Central retinal artery occlusion, bilateral

  • H34.2 for Other retinal artery occlusions

  • H34.21 for Partial retinal artery occlusion

  • H34.23 for Retinal artery branch occlusion

  • H34.8 for Other retinal vascular occlusions

  • H34.81 for Central retinal vein occlusion

  • H34.82 for Venous engorgement

  • H34.83 for Tributary (branch) retinal vein occlusion

  • Use H34.9 for Unspecified retinal vascular occlusion

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H34: its own notes plus those printed at Chapter 7. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
  • diabetes mellitus related eye conditions (E09.3-, E10.3-, E11.3-, E13.3-)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury (trauma) of eye and orbit (S05.-)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
  • syphilis related eye disorders (A50.01, A50.3-, A51.43, A52.71)

Notes

General instructions on how these codes are used.

From Chapter 7 (H00-H59) Diseases of the eye and adnexa applies to 2,677 codes
  • Use an external cause code following the code for the eye condition, if applicable, to identify the cause of the eye condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name H34, its category, or a range that includes it.

Excludes2 2

These codes carry an Excludes2 note naming H34: its condition is not part of those codes, and both may be reported when the patient has both.

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

Patient EducationClinical

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.

The full article covers:

  • What are retinal disorders?
  • What causes retinal disorders?
  • What are common retinal disorders?
  • What are the symptoms of retinal disorders?
  • How are retinal disorders diagnosed?
  • How are retinal disorders treated?
  • Can retinal disorders be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H34Overview

What is the ICD-10 code for retinal vascular occlusions?

H34 is the ICD-10-CM category for retinal vascular occlusions, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is H34 (Retinal vascular occlusions) a billable code?

No. This is a category header that groups the codes for retinal vascular occlusions, and headers cannot be submitted on claims. Claims for retinal vascular occlusions need a more specific code from this category, such as H34.00, H34.01, and H34.02.

Can H34 be reported with G45.3?

Not as a rule. The Excludes1 note on H34 lists "amaurosis fugax (G45.3)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).