H40.01 – Open angle with borderline findings, low risk
ICD-10-CM 2027 diagnosis code · Glaucoma
ICD-10-CM code
H40.01
- Code
H40.01(claims format:H4001)- Description
- Open angle with borderline findings, low risk
- Billable
- No – use a more specific code below
- 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
Billable codes under H40.01
H40.01 is a header code and cannot be used on claims. Choose the most specific code:
- H40.011 – Open angle with borderline findings, low risk, right eyeBillable
- H40.012 – Open angle with borderline findings, low risk, left eyeBillable
- H40.013 – Open angle with borderline findings, low risk, bilateralBillable
- H40.019 – Open angle with borderline findings, low risk, unspecified eyeBillable
Notes for H40.01
Applicable to:
- Open angle, low risk
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
H40 – Glaucoma
Index terms for H40.01
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in H40.0
Frequently asked questions
What is ICD-10 code H40.01?
H40.01 is the ICD-10-CM code for open angle with borderline findings, low risk, in the block H40-H42 (Glaucoma).
Is H40.01 a billable code?
No. H40.01 is a header code with more specific child codes; report one of the billable codes listed above.
What category does H40.01 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.