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ICD-10-CM Code H70.10
Chronic mastoiditis, unspecified ear

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
| ICD-10 from 2011 - 2016

H70.10 is a billable ICD code used to specify a diagnosis of chronic mastoiditis, unspecified ear. A 'billable code' is detailed enough to be used to specify a medical diagnosis.


The ICD code H70 is used to code Mastoiditis

Mastoiditis is the result of an infection that extends to the air cells of the skull behind the ear. Specifically, it is an inflammation of the mucosal lining of the mastoid antrum and mastoid air cell system inside the mastoid process. The mastoid process is the portion of the temporal bone of the skull that is behind the ear which contains open, air-containing spaces. Mastoiditis is usually caused by untreated acute otitis media (middle ear infection) and used to be a leading cause of child mortality. With the development of antibiotics, however, mastoiditis has become quite rare in developed countries where surgical treatment is now much less frequent and more conservative, unlike former times. Additionally, there is no evidence that the drop in antibiotic prescribing for otitis media has increased the incidence of mastoiditis. Untreated, the infection can spread to surrounding structures, including the brain, causing serious complications.

Specialty: Otorhinolaryngology
MeSH Codes: D008417, D008417
ICD 9 Codes: 383.0, 383.1

Side view of head, showing surface relations of bones. (Mastoid process labeled near center.)

Source: Wikipedia

MS-DRG Mapping

  • DRG Group #152-153 - Otitis media and uri with MCC.
  • DRG Group #152-153 - Otitis media and uri without MCC.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Chronic mastoiditis (approximate match)

This is the official approximate match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that while there is no exact mapping between this ICD10 code H70.10 and a single ICD9 code, 383.1 is an approximate match for comparison and conversion purposes.


Parent Code: H70.1 - Chronic mastoiditis

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/H7010