H40.10 is a "category code," which means it's non-billable. Billable codes require more specificity. Use the list below to navigate to codes that are more specific:
10
H40.10X0
Unspecified open-angle glaucoma, stage unspecified
Billable
10
H40.10X1
Unspecified open-angle glaucoma, mild stage
Billable
10
H40.10X2
Unspecified open-angle glaucoma, moderate stage
Billable
10
H40.10X3
Unspecified open-angle glaucoma, severe stage
Billable
10
H40.10X4
Unspecified open-angle glaucoma, indeterminate stage
Billable