2026 ICD-10-CM Diagnosis Code H31.112Age-related choroidal atrophy, left eye

ICD-10-CM Codes›H00–H59›H30-H36›H31

ICD-10-CM H31.112
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H31.112 is a billable ICD-10-CM diagnosis code for age-related choroidal atrophy, 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. The code is restricted by the Medicare Code Editor to adult patients (age 15 through 124). Coders also document this condition as age-related atrophy of left choroid. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Retinal and vitreous conditions.

Code Identity

ICD-10-CM Code
H31.112
Billable Status
Yes — Valid for Submission
Code Describes
Age-related choroidal atrophy, left eye
Short Description
Age-related choroidal atrophy, left eye
Same as the full description in the CMS dataset.
Parent Code
H31.11
Age-related choroidal atrophy

Code Classification

ChapterH00–H59Diseases of the eye and adnexa
SectionH30-H36Disorders of choroid and retina
CategoryH31Other disorders of choroid
This CodeH31.112Age-related choroidal atrophy, left eye

Code EditsBilling

Medicare Code Editor checks that affect claim validity for H31.112.

Adult diagnoses
The Medicare Code Editor detects inconsistencies in adult cases by checking a patient's age and any diagnosis on the patient's record. The adult code edits apply to patients age range is 15–124 years inclusive (e.g., senile delirium, mature cataract).

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Age-related atrophy of left choroid
  • Senile atrophy of choroid

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

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Convert H31.112 to ICD-9-CMHistory

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

ICD-9-CM
362.77 Bruch membrane dystrophy
Approximate The match is approximate rather than exact.
ICD-9-CM
363.41 Senile atrophy, choroid
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 H31.112Overview

Is H31.112 (Age-related choroidal atrophy) a billable code?

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

What MS-DRG does H31.112 group to?

When age-related choroidal atrophy, 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.

Who can H31.112 be reported for?

The Medicare Code Editor checks age-related choroidal atrophy, left eye against patient demographics: this code is intended for adult patients (age 15 through 124). Claims outside these limits are flagged as inconsistent.

What is the ICD-9 equivalent of H31.112?

Under the General Equivalence Mappings, age-related choroidal atrophy, left eye converts to ICD-9-CM 362.77 (bruch membrane dystrophy) and 363.41 (senile atrophy, choroid). 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.