H70.9
Unspecified mastoiditis
Clinical Information
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Inflammation of the honeycomb-like mastoid bone in the skull just behind the ear. It is usually a complication of otitis media.
Details
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H70.9 should not be used for reimbursement purposes as there are multiple codes below it that contain a greater level of detail.
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The 2023 edition of ICD-10-CM H70.9 became effective on October 1, 2022.
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This is the American ICD-10-CM version of H70.9 – other international versions of ICD-10 H70.9 may differ.