ICD-10 Code for Otitis

The default ICD-10-CM 2027 code for otitis (acute) is H66.90 – Otitis media, unspecified, unspecified ear. More specific codes depend on the details documented, as listed in the official index (45 codes, 13 billable).

Main code: H66.90 – Otitis media, unspecified, unspecified ear
Billable: Yes

Index entries for Otitis

with effusion – see also Otitis, media, nonsuppurative
- purulent – see Otitis, media, suppurative
adhesive
chronic – see also Otitis, media, chronic
- with effusion – see also Otitis, media, nonsuppurative, chronic
externa – H60.9- (header)
- abscess – see Abscess, ear, external
- acute (noninfective) – H60.50- (header)
  - actinic – H60.51- (header)
  - chemical – H60.52- (header)
  - contact – H60.53- (header)
  - eczematoid – H60.54- (header)
  - infective – see Otitis, externa, infective
  - reactive – H60.55- (header)
  - specified NEC – H60.59- (header)
- cellulitis – see Cellulitis, ear
- chronic – H60.6- (header)
- diffuse – see Otitis, externa, infective, diffuse
- hemorrhagic – see Otitis, externa, infective, hemorrhagic
- in (due to)
  - aspergillosis – B44.89
  - candidiasis – B37.84
  - erysipelas – A46 – H62.4- (header) [manifestation]
  - herpes (simplex) – B00.1
    - zoster – B02.8
  - impetigo – L01.00 – H62.4- (header) [manifestation]
  - infectious disease NEC – B99 (header) – H62.4- (header) [manifestation]
  - mycosis NEC – B36.9 – H62.4- (header) [manifestation]
  - parasitic disease NEC – B89 – H62.4- (header) [manifestation]
  - viral disease NEC – B34.9 – H62.4- (header) [manifestation]
  - zoster – B02.8
- infective NEC – H60.39- (header)
  - abscess – see Abscess, ear, external
  - cellulitis – see Cellulitis, ear
  - diffuse – H60.31- (header)
  - hemorrhagic – H60.32- (header)
  - swimmer's ear – see Swimmer's, ear
- malignant – H60.2- (header)
- mycotic NEC – B36.9 – H62.4- (header) [manifestation]
  - in
    - aspergillosis – B44.89
    - candidiasis – B37.84
    - moniliasis – B37.84
- necrotizing – see Otitis, externa, malignant
- Pseudomonas aeruginosa – see Otitis, externa, malignant
- reactive – see Otitis, externa, acute, reactive
- specified NEC
- tropical NEC – B36.9 – H62.4- (header) [manifestation]
  - in
    - aspergillosis – B44.89
    - candidiasis – B37.84
    - moniliasis – B37.84
insidiosa – see Otosclerosis
interna
media (hemorrhagic) (staphylococcal) (streptococcal) – H66.9- (header)
- with effusion (nonpurulent) – see Otitis, media, nonsuppurative
- acute, subacute – H66.90
  - allergic – see Otitis, media, nonsuppurative, acute, allergic
  - exudative – see Otitis, media, suppurative, acute
  - mucoid – see Otitis, media, nonsuppurative, acute
  - necrotizing – see also Otitis, media, suppurative, acute
    - in
      - measles – B05.3
      - scarlet fever – A38.0
  - nonsuppurative NEC – see Otitis, media, nonsuppurative, acute
  - purulent – see Otitis, media, suppurative, acute
  - sanguinous – see Otitis, media, nonsuppurative, acute
  - secretory – see Otitis, media, nonsuppurative, acute, serous
  - seromucinous – see Otitis, media, nonsuppurative, acute
  - serous – see Otitis, media, nonsuppurative, acute, serous
  - suppurative – see Otitis, media, suppurative, acute
- allergic – see Otitis, media, nonsuppurative
- catarrhal – see Otitis, media, nonsuppurative
- chronic – H66.90
  - with effusion (nonpurulent) – see Otitis, media, nonsuppurative, chronic
  - allergic – see Otitis, media, nonsuppurative, chronic, allergic
  - benign suppurative – see Otitis, media, suppurative, chronic, tubotympanic
  - catarrhal – see Otitis, media, nonsuppurative, chronic, serous
  - exudative – see Otitis, media, nonsuppurative, chronic
  - mucinous – see Otitis, media, nonsuppurative, chronic, mucoid
  - mucoid – see Otitis, media, nonsuppurative, chronic, mucoid
  - nonsuppurative NEC – see Otitis, media, nonsuppurative, chronic
  - purulent – see Otitis, media, suppurative, chronic
  - secretory – see Otitis, media, nonsuppurative, chronic, mucoid
  - seromucinous – see Otitis, media, nonsuppurative, chronic
  - serous – see Otitis, media, nonsuppurative, chronic, serous
  - suppurative – see Otitis, media, suppurative, chronic
  - transudative – see Otitis, media, nonsuppurative, chronic, mucoid
- exudative – see Otitis, media, suppurative
- in (due to) (with)
  - influenza – see Influenza, with, otitis media
  - measles – B05.3
  - scarlet fever – A38.0
  - tuberculosis – A18.6
  - viral disease NEC – B34.- (header) – H67.- (header) [manifestation]
- mucoid – see Otitis, media, nonsuppurative
- nonsuppurative – H65.9- (header)
  - acute or subacute NEC – H65.19- (header)
    - allergic – H65.11- (header)
      - recurrent – H65.11- (header)
    - recurrent – H65.19- (header)
    - secretory – see Otitis, media, nonsuppurative, serous
    - serous – H65.0- (header)
      - recurrent – H65.0- (header)
  - chronic – H65.49- (header)
    - allergic – H65.41- (header)
    - mucoid – H65.3- (header)
    - serous – H65.2- (header)
- postmeasles – B05.3
- purulent – see Otitis, media, suppurative
- secretory – see Otitis, media, nonsuppurative
- seromucinous – see Otitis, media, nonsuppurative
- serous – see Otitis, media, nonsuppurative
- suppurative – H66.4- (header)
  - acute – H66.00- (header)
    - with rupture of ear drum – H66.01- (header)
    - recurrent – H66.00- (header)
      - with rupture of ear drum – H66.01- (header)
  - chronic – H66.3 (header) – see also subcategory
    - atticoantral – H66.2- (header)
    - benign – see Otitis, media, suppurative, chronic, tubotympanic
    - tubotympanic – H66.1- (header)
- transudative – see Otitis, media, nonsuppurative
- tuberculous – A18.6

How to choose the right code

Start with the main term, then pick the indented subterm that matches the documentation (type, cause, site, laterality, episode of care). Always confirm the code in the tabular list: follow its Excludes1/Excludes2, “code first” and “use additional code” notes, and add a 7th character where required.

Source: CDC/NCHS ICD-10-CM FY2027 alphabetic index.