H66.90
ICD-10-CMThis code signifies an inflammation or infection of the middle ear where the specific type of otitis media (e.g., acute, chronic, serous) is not documented. It also indicates that the affected ear (left, right, or bilateral) is not specified in the medical record. This is a general diagnosis used when more precise information is unavailable.
Use this code when the provider's documentation clearly states "otitis media" but does not specify the acuity (e.g., acute, chronic), effusion status, or the laterality of the affected ear. This often occurs in initial assessments or when detailed diagnostic information is pending or not recorded. It is appropriate when the clinical picture is consistent with middle ear inflammation, but further specificity is lacking.
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