Index to Diseases and Injuries
Mastoiditis (coalescent) (hemorrhagic) (suppurative)
Index code:H70.9-
- acute, subacute H70.00-
- complicated NEC H70.09-
- subperiosteal H70.01-
- chronic (necrotic) (recurrent) H70.1-
- in (due to)
- infectious disease NEC B99 [H75.0-]
- parasitic disease NEC B89 [H75.0-]
- tuberculosis A18.03
- petrositis — see Petrositis
- postauricular fistula — see Fistula, postauricular
- specified NEC H70.89-
- tuberculous A18.03
Use the index to find a code, then confirm it in the Tabular List before assigning it. A code ending in a dash is incomplete, and a code in [brackets] is a manifestation code reported after the underlying condition. Search the whole index.
Frequently asked questions
What is the ICD-10-CM code for Mastoiditis?
The ICD-10-CM Alphabetic Index directs "Mastoiditis" to H70.9- (incomplete; more characters are required). Subterms below it may lead to a more specific code. Always confirm the code in the Tabular List before assigning it.
ICD-10-CM Index to Diseases and Injuries maintained by CDC/NCHS (public domain), from the CMS FY2027 release.