H47.21 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
H47.211
Primary optic atrophy, right eye
Billable
10
H47.212
Primary optic atrophy, left eye
Billable
10
H47.213
Primary optic atrophy, bilateral
Billable
10
H47.219
Primary optic atrophy, unspecified eye
Billable