H11.00 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
H11.001
Unspecified pterygium of right eye
Billable
10
H11.002
Unspecified pterygium of left eye
Billable
10
H11.003
Unspecified pterygium of eye, bilateral
Billable
10
H11.009
Unspecified pterygium of unspecified eye
Billable