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ICD-10-CM Current in FY 2027

H70.10

Chronic mastoiditis, unspecified ear

Release
FY 2027
Effective
Official source (opens in a new tab)

Hierarchy

Where H70.10 sits in the official hierarchy. Each level is the code it is classified under.

  1. H70 Mastoiditis and related conditions
  2. H70.1 Parent Chronic mastoiditis
  3. H70.10 This code Chronic mastoiditis, unspecified ear

Official Coding Notes

Reproduced verbatim from the FY 2027 ICD-10-CM files. Notes labelled as inherited are declared on a parent code and apply here too.

Excludes1

tuberculous mastoiditis ( A18.03 )

Inherited from H70.1 — Chronic mastoiditis

Version History

How H70.10 appears in each release imported from the official files, newest first.

  1. FY 2027 Effective

    Current

    Chronic mastoiditis, unspecified ear

  2. FY 2026 Effective

    Unchanged

    Chronic mastoiditis, unspecified ear

Related Codes

Other codes under H70.1

Data Source

Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.

Release
FY 2027
Effective
Source file
icd10cm-code-descriptions-2027.zip

Official ICD-10-CM source files (opens in a new tab)

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