ICD-10-CM Codes
H60-H95 Diseases of the ear and mastoid process
H65-H75 Diseases of middle ear and mastoid

Mastoiditis and related conditions H70- >

Codes

H70 Mastoiditis and related conditions
- H70.0 Acute mastoiditis
  - H70.00 Acute mastoiditis without complications
    - H70.001 …… right ear
    - H70.002 …… left ear
    - H70.003 …… bilateral
    - H70.009 …… unspecified ear
  - H70.01 Subperiosteal abscess of mastoid
    - H70.011 …… right ear
    - H70.012 …… left ear
    - H70.013 …… bilateral
    - H70.019 …… unspecified ear
  - H70.09 Acute mastoiditis with other complications
    - H70.091 …… right ear
    - H70.092 …… left ear
    - H70.093 …… bilateral
    - H70.099 …… unspecified ear
- H70.1 Chronic mastoiditis
  - H70.10 …… unspecified ear
  - H70.11 …… right ear
  - H70.12 …… left ear
  - H70.13 …… bilateral
- H70.2 Petrositis
  - H70.20 Unspecified petrositis
    - H70.201 …… right ear
    - H70.202 …… left ear
    - H70.203 …… bilateral
    - H70.209 …… unspecified ear
  - H70.21 Acute petrositis
    - H70.211 …… right ear
    - H70.212 …… left ear
    - H70.213 …… bilateral
    - H70.219 …… unspecified ear
  - H70.22 Chronic petrositis
    - H70.221 …… right ear
    - H70.222 …… left ear
    - H70.223 …… bilateral
    - H70.229 …… unspecified ear
- H70.8 Other mastoiditis and related conditions
  - H70.81 Postauricular fistula
    - H70.811 …… right ear
    - H70.812 …… left ear
    - H70.813 …… bilateral
    - H70.819 …… unspecified ear
  - H70.89 Other mastoiditis and related conditions
    - H70.891 …… right ear
    - H70.892 …… left ear
    - H70.893 …… bilateral
    - H70.899 …… unspecified ear
- H70.9 Unspecified mastoiditis
  - H70.90 …… unspecified ear
  - H70.91 …… right ear
  - H70.92 …… left ear
  - H70.93 …… bilateral