H00.01 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
H00.011
Hordeolum externum right upper eyelid
Billable
10
H00.012
Hordeolum externum right lower eyelid
Billable
10
H00.013
Hordeolum externum right eye, unspecified eyelid
Billable
10
H00.014
Hordeolum externum left upper eyelid
Billable
10
H00.015
Hordeolum externum left lower eyelid
Billable
10
H00.016
Hordeolum externum left eye, unspecified eyelid
Billable
10
H00.019
Hordeolum externum unspecified eye, unspecified eyelid
Billable