2026 ICD-10-CM Diagnosis Code H33.22Serous retinal detachment, left eye

ICD-10-CM Codes›H00–H59›H30-H36›H33

ICD-10-CM H33.22
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H33.22 is a billable ICD-10-CM diagnosis code for serous retinal detachment, left eye. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 124 through 125. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Retinal and vitreous conditions.

Code Identity

ICD-10-CM Code
H33.22
Billable Status
Yes — Valid for Submission
Code Describes
Serous retinal detachment, left eye
Short Description
Serous retinal detachment, left eye
Same as the full description in the CMS dataset.
Parent Code
H33.2
Serous retinal detachment

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH30-H36Disorders of choroid and retina
CategoryH33Retinal detachments and breaks
This CodeH33.22Serous retinal detachment, left eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acute detachment of retina of left eye
  • Acute partial detachment of retina of left eye
  • Chronic partial detachment of retina of left eye
  • Chronic total detachment of retina of left eye
  • Glaucoma due to retinal detachment
  • Glaucoma of left eye due to retinal detachment
  • Ocular hypertension of left eye due to retinal detachment
  • Old retinal detachment
  • Old retinal detachment of left eye
  • Old total retinal detachment
  • Recent retinal detachment
  • Recent subtotal retinal detachment
  • Retinal detachment of left eye
  • Secondary ocular hypertension due to retinal detachment
  • Serous detachment of left retinal pigment epithelium
  • Serous detachment of retinal pigment epithelium
  • Serous retinal detachment
  • Serous retinal detachment of left eye
  • Total detachment of left retina
  • Total retinal detachment

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR EYE005
Retinal and vitreous conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Serous Retinal Detachment

    retinal detachment secondary to fluid accumulation under the neurosensory retina without a retinal tear or break.

Patient EducationClinical

Retinal Detachment

The retina is a layer of tissue in the back of your eye that senses light and sends images to your brain. It provides the sharp, central vision needed for reading, driving, and seeing fine detail. A retinal detachment lifts or pulls the retina from its normal position.

Read the full article at MedlinePlus

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

Convert H33.22 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
361.2 Serous retina detachment
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H33.22Overview

Is H33.22 (Serous retinal detachment) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report serous retinal detachment, left eye on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H33.22 group to?

When serous retinal detachment, left eye is the principal diagnosis on an inpatient stay, it groups to MS-DRG 124, 125, with relative weights from 0.7678 to 1.3231 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H33.22?

Under the General Equivalence Mappings, serous retinal detachment, left eye converts to ICD-9-CM 361.2 (serous retina detachment). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.