2026 ICD-10-CM Diagnosis Code H31.001Unspecified chorioretinal scars, right eye

ICD-10-CM Codes›H00–H59›H30-H36›H31

ICD-10-CM H31.001
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H31.001 is a billable ICD-10-CM diagnosis code for unspecified chorioretinal scars, 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 chorioretinal scar of right eye. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Retinal and vitreous conditions.

Code Identity

ICD-10-CM Code
H31.001
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified chorioretinal scars, right eye
Short Description
Unspecified chorioretinal scars, right eye
Same as the full description in the CMS dataset.
Parent Code
H31.00
Unspecified chorioretinal scars

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH30-H36Disorders of choroid and retina
CategoryH31Other disorders of choroid
This CodeH31.001Unspecified chorioretinal scars, right eye

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Chorioretinal scar of right eye
  • Disseminated chorioretinal scars
  • Right disseminated chorioretinal scars

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

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 H31.001 to ICD-9-CMHistory

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

ICD-9-CM
363.30 Chorioretinal scar NOS
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 H31.001Overview

Is H31.001 (Unspecified chorioretinal scars) a billable code?

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

What MS-DRG does H31.001 group to?

When unspecified chorioretinal scars, 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 H31.001?

Under the General Equivalence Mappings, unspecified chorioretinal scars, right eye converts to ICD-9-CM 363.30 (chorioretinal scar NOS). 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.