2026 ICD-10-CM Diagnosis Code H30.121Disseminated chorioretinal inflammation, peripheral right eye

ICD-10-CM Codes›H00–H59›H30-H36›H30

ICD-10-CM H30.121
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H30.121 is a billable ICD-10-CM diagnosis code for disseminated chorioretinal inflammation, peripheral right 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. Coders also document this condition as disseminated chorioretinitis of right eye. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Retinal and vitreous conditions and Uveitis and ocular inflammation.

Code Identity

ICD-10-CM Code
H30.121
Billable Status
Yes — Valid for Submission
Code Describes
Disseminated chorioretinal inflammation, peripheral right eye
Short Description
Disseminated chorioretin inflammation, peripheral right eye
Parent Code
H30.12
Disseminated chorioretinal inflammation, peripheral

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH30-H36Disorders of choroid and retina
CategoryH30Chorioretinal inflammation
This CodeH30.121Disseminated chorioretinal inflammation, peripheral right eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disseminated chorioretinitis of right eye
  • Disseminated peripheral chorioretinitis
  • Peripheral disseminated choroiditis
  • Peripheral disseminated choroiditis of right eye
  • Right disseminated peripheral chorioretinitis

Clinical ClassificationClinical

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

CCSR EYE005
Retinal and vitreous conditions
Default principal diagnosis: inpatient No · outpatient No
CCSR EYE004
Uveitis and ocular inflammation
Default principal diagnosis: inpatient Yes · outpatient Yes

Patient EducationClinical

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.

Read the full article at MedlinePlus

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

Convert H30.121 to ICD-9-CMHistory

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

ICD-9-CM
363.12 Periph disem choroiditis
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 H30.121Overview

Is H30.121 (Disseminated chorioretinal inflammation, peripheral) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report disseminated chorioretinal inflammation, peripheral right eye on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H30.121 group to?

When disseminated chorioretinal inflammation, peripheral right 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 H30.121?

Under the General Equivalence Mappings, disseminated chorioretinal inflammation, peripheral right eye converts to ICD-9-CM 363.12 (periph disem choroiditis). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.