H20.05 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
H20.051
Hypopyon, right eye
Billable
10
H20.052
Hypopyon, left eye
Billable
10
H20.053
Hypopyon, bilateral
Billable
10
H20.059
Hypopyon, unspecified eye
Billable