| ICD-10 Code | Description |
| H70.001 | Acute mastoiditis without complications, right ear |
| H70.002 | Acute mastoiditis without complications, left ear |
| H70.003 | Acute mastoiditis without complications, bilateral |
| H70.009 | Acute mastoiditis without complications, unspecified ear |
| H70.011 | Subperiosteal abscess of mastoid, right ear |
| H70.012 | Subperiosteal abscess of mastoid, left ear |
| H70.013 | Subperiosteal abscess of mastoid, bilateral |
| H70.019 | Subperiosteal abscess of mastoid, unspecified ear |
| H70.091 | Acute mastoiditis with other complications, right ear |
| H70.092 | Acute mastoiditis with other complications, left ear |
| H70.093 | Acute mastoiditis with other complications, bilateral |
| H70.099 | Acute mastoiditis with other complications, unspecified ear |
