Unspecified petrositis, bilateral

This code signifies an inflammation of the petrous bone, a part of the temporal bone in the skull, affecting both ears. The specific type or cause of the petrositis is not documented or determined. It typically arises as a complication of otitis media.

Apply this code when documentation indicates petrositis affecting both the left and right petrous pyramids, but the physician has not specified the type (e.g., acute, chronic, suppurative). This code is appropriate when the laterality is clearly bilateral, and the specific nature of the inflammation is unknown.

• Ensure documentation explicitly states "bilateral" involvement; otherwise, consider laterality-specific codes.
• Avoid using this code if the type of petrositis (e.g., acute, chronic) is specified; instead, use a more specific code from the H70.0-H70.1 series.
• Always query the provider if the documentation is unclear regarding the laterality or the specific type of petrositis to allow for more precise coding.