| H70.00 | Acute mastoiditis without complications | NON-BILLABLE CODE |
| H70.001 | Acute mastoiditis without complications, right ear | BILLABLE CODE |
| H70.002 | Acute mastoiditis without complications, left ear | BILLABLE CODE |
| H70.003 | Acute mastoiditis without complications, bilateral | BILLABLE CODE |
| H70.009 | Acute mastoiditis without complications, unspecified ear | BILLABLE CODE |
| H70.01 | Subperiosteal abscess of mastoid | NON-BILLABLE CODE |
| H70.011 | Subperiosteal abscess of mastoid, right ear | BILLABLE CODE |
| H70.012 | Subperiosteal abscess of mastoid, left ear | BILLABLE CODE |
| H70.013 | Subperiosteal abscess of mastoid, bilateral | BILLABLE CODE |
| H70.019 | Subperiosteal abscess of mastoid, unspecified ear | BILLABLE CODE |
| H70.09 | Acute mastoiditis with other complications | NON-BILLABLE CODE |
| H70.091 | Acute mastoiditis with other complications, right ear | BILLABLE CODE |
| H70.092 | Acute mastoiditis with other complications, left ear | BILLABLE CODE |
| H70.093 | Acute mastoiditis with other complications, bilateral | BILLABLE CODE |
| H70.099 | Acute mastoiditis with other complications, unspecified ear | BILLABLE CODE |
