Is H40.00 a billable code?
No. H40.00 is a header code that groups 4 more specific codes. Use one of the billable codes listed on this page instead.
ICD-10-CM FY2027 diagnosis code
H40.00: Preglaucoma, unspecified
Header code: not billableValid for dates of service October 1, 2026 to September 30, 2027
H40.00 groups related diagnoses under preglaucoma, unspecified. It cannot be used on a claim by itself. Choose the billable code below that matches the patient's record.
Billable codes under H40.00
- H40.001Preglaucoma, unspecified, right eye
- H40.002Preglaucoma, unspecified, left eye
- H40.003Preglaucoma, unspecified, bilateral
- H40.009Preglaucoma, unspecified, unspecified eye
Other codes in H40.0 Glaucoma suspect
H40.00 questions
What does H40.00 mean?
H40.00 is the ICD-10-CM code for Preglaucoma, unspecified. It is in chapter 7, Diseases of the eye and adnexa (H00-H59).
Code titles come from the official ICD-10-CM files published by the CDC National Center for Health Statistics. Always check payer rules and the clinical record before billing.