| 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 |
| H70.091 | 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 |
| H70.10 | Chronic mastoiditis, unspecified ear |
| H70.11 | Chronic mastoiditis, right ear |
| H70.12 | Chronic mastoiditis, left ear |
| H70.13 | Chronic mastoiditis, bilateral |
| H70.891 | Other mastoiditis and related conditions, right ear |
| H70.892 | Other mastoiditis and related conditions, left ear |
| H70.893 | Other mastoiditis and related conditions, bilateral |
| H70.899 | Other mastoiditis and related conditions, unspecified ear |
| H70.90 | Unspecified mastoiditis, unspecified ear |
| H70.91 | Unspecified mastoiditis, right ear |
| H70.92 | Unspecified mastoiditis, left ear |
| H70.93 | Unspecified mastoiditis, bilateral |
| H75.00 | Mastoiditis in infectious and parasitic diseases classified elsewhere, unspecified ear |
| H75.01 | Mastoiditis in infectious and parasitic diseases classified elsewhere, right ear |
| H75.02 | Mastoiditis in infectious and parasitic diseases classified elsewhere, left ear |
| H75.03 | Mastoiditis in infectious and parasitic diseases classified elsewhere, bilateral |