H40.021 – Open angle with borderline findings, high risk, right eye
ICD-10-CM 2027 diagnosis code · Glaucoma
ICD-10-CM code
H40.021
- Code
H40.021(claims format:H40021)- Description
- Open angle with borderline findings, high risk, right eye
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 7. Diseases of the eye and adnexa (H00-H59)
- Block
- H40-H42 Glaucoma
- Parent codes
- H40 › H40.0 › H40.02
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
H40 – Glaucoma
Excludes1 (not coded here):
H40.02 – Open angle with borderline findings, high risk
Applicable to:
- Open angle, high risk
Related codes in H40.02
Frequently asked questions
What is ICD-10 code H40.021?
H40.021 is the ICD-10-CM code for open angle with borderline findings, high risk, right eye, in the block H40-H42 (Glaucoma).
Is H40.021 a billable code?
Yes. H40.021 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does H40.021 belong to?
It belongs to category H40 – Glaucoma.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.