H05.40 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
H05.401
Unspecified enophthalmos, right eye
Billable
10
H05.402
Unspecified enophthalmos, left eye
Billable
10
H05.403
Unspecified enophthalmos, bilateral
Billable
10
H05.409
Unspecified enophthalmos, unspecified eye
Billable