2026 ICD-10-CM Diagnosis Code H59.031Cystoid macular edema following cataract surgery, right eye
ICD-10-CM Codes›H00–H59›H59›H59
- Billable — Valid for Submission
- Not Chronic
H59.031 is a billable ICD-10-CM diagnosis code for cystoid macular edema following cataract surgery, right eye. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 919 through 921. Coders also document this condition as cystoid macular edema following cataract surgery. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative eye complication.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cystoid macular edema following cataract surgery
- Cystoid macular edema of right eye due to and following cataract surgery
- Cystoid macular edema of right retina
- Postoperative cystoid macular edema
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Cataract
A cataract is a clouding of the lens in your eye. It affects your vision. Cataracts are very common in older people. By age 80, more than half of all Americans either have a cataract or have had cataract surgery.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert H59.031 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H59.031Overview
Is H59.031 (Cystoid macular edema following cataract surgery) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report cystoid macular edema following cataract surgery, right eye on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does H59.031 group to?
When cystoid macular edema following cataract surgery, right eye is the principal diagnosis on an inpatient stay, it groups to MS-DRG 919, 920, 921, with relative weights from 0.6884 to 1.8308 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of H59.031?
Under the General Equivalence Mappings, cystoid macular edema following cataract surgery, right eye converts to ICD-9-CM 997.99 (surg compl-body syst NEC). 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.
