| H70 | Mastoiditis and related conditions |
| | Acute mastoiditis |
| | Acute mastoiditis without complications |
| | Acute mastoiditis without complications, right ear |
| | Acute mastoiditis without complications, left ear |
| | Acute mastoiditis without complications, bilateral |
| | Acute mastoiditis without complications, unspecified ear |
| | Subperiosteal abscess of mastoid |
| | Subperiosteal abscess of mastoid, right ear |
| | Subperiosteal abscess of mastoid, left ear |
| | Subperiosteal abscess of mastoid, bilateral |
| | Subperiosteal abscess of mastoid, unspecified ear |
| | Acute mastoiditis with other complications |
| | Acute mastoiditis with other complications, right ear |
| | Acute mastoiditis with other complications, left ear |
| | Acute mastoiditis with other complications, bilateral |
| | Acute mastoiditis with other complications, unspecified ear |
| | Chronic mastoiditis |
| | Chronic mastoiditis, unspecified ear |
| | Chronic mastoiditis, right ear |
| | Chronic mastoiditis, left ear |
| | Chronic mastoiditis, bilateral |
| | Petrositis |
| | Unspecified petrositis |
| | Unspecified petrositis, right ear |
| | Unspecified petrositis, left ear |
| | Unspecified petrositis, bilateral |
| | Unspecified petrositis, unspecified ear |
| | Acute petrositis |
| | Acute petrositis, right ear |
| | Acute petrositis, left ear |
| | Acute petrositis, bilateral |
| | Acute petrositis, unspecified ear |
| | Chronic petrositis |
| | Chronic petrositis, right ear |
| | Chronic petrositis, left ear |
| | Chronic petrositis, bilateral |
| | Chronic petrositis, unspecified ear |
| | Other mastoiditis and related conditions |
| | Postauricular fistula |
| | Postauricular fistula, right ear |
| | Postauricular fistula, left ear |
| | Postauricular fistula, bilateral |
| | Postauricular fistula, unspecified ear |
| | Other mastoiditis and related conditions |
| | Other mastoiditis and related conditions, right ear |
| | Other mastoiditis and related conditions, left ear |
| | Other mastoiditis and related conditions, bilateral |
| | Other mastoiditis and related conditions, unspecified ear |
| | Unspecified mastoiditis |
| | Unspecified mastoiditis, unspecified ear |
| | Unspecified mastoiditis, right ear |
| | Unspecified mastoiditis, left ear |
| | Unspecified mastoiditis, bilateral |
