2026 ICD-10-CM Diagnosis Code H40.63X1Glaucoma secondary to drugs, bilateral, mild stage
H40.63X1 is a billable ICD-10-CM diagnosis code for glaucoma secondary to drugs, bilateral, mild stage. The 7th character 1 reports mild stage glaucoma. 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 Drug induced or toxic related condition and Glaucoma.
Code Identity
Code Classification
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Drug Reactions
Most of the time, medicines make our lives better. They reduce aches and pains, fight infections, and control problems such as high blood pressure or diabetes. But medicines can also cause unwanted reactions, such as drug interactions, side effects, and allergies.
The full article covers:
- What is a drug interaction?
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Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert H40.63X1 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About H40.63X1Overview
Is H40.63X1 (Glaucoma secondary to drugs, bilateral) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report glaucoma secondary to drugs, bilateral, mild stage on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character 1 in H40.63X1 mean?
The final character 1 reports mild stage glaucoma, in this case involving the glaucoma secondary to drugs.
What MS-DRG does H40.63X1 group to?
When glaucoma secondary to drugs, bilateral, mild stage 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 H40.63X1?
Under the General Equivalence Mappings, glaucoma secondary to drugs, bilateral, mild stage converts to ICD-9-CM 365.31 (glauc stage-ster induced), 365.32 (glauc resid-ster induced), and 365.71 (mild stage glaucoma). 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.
