Acute mastoiditis with other complications, bilateral

This code signifies an acute inflammation of the mastoid air cells, a bony prominence behind the ear, that has progressed to involve other complications beyond simple inflammation, affecting both ears. These complications might include facial paralysis, labyrinthitis, or intracranial extension. It represents a severe, active infection requiring prompt medical intervention.

Use this code when documentation clearly indicates acute mastoiditis with specific complications (e.g., facial nerve palsy, intracranial abscess, labyrinthine fistula) affecting both the left and right mastoid processes. The physician's notes should explicitly state the acute nature of the infection and detail the bilateral involvement and the specific "other" complications present.

• Ensure documentation specifies bilateral involvement and identifies the acute nature of the mastoiditis.
• Verify that the complications are clearly documented and fall under "other complications" rather than a simple abscess or subperiosteal abscess (which have separate codes).
• Always sequence this code first if it is the primary reason for the encounter, followed by codes for any specific complications if they are not inherent to the "other complications" category.