H70.9 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
H70.90
Unspecified mastoiditis, unspecified ear
Billable
10
H70.91
Unspecified mastoiditis, right ear
Billable
10
H70.92
Unspecified mastoiditis, left ear
Billable
10
H70.93
Unspecified mastoiditis, bilateral
Billable