Obtaining access to Internet-based PECOS by organizational providers and suppliers (e.g., professional associations, professional corporations, limited liability corporations) involves several steps, and the first step must be taken by the Authorized Official (AO) of the DMEPOS supplier.
Mastoiditis is a serious bacterial infection that affects the mastoid bone behind the ear. It's usually more common in children, although adults can also sometimes be affected. The mastoid bone has a honeycomb-like structure that contains air spaces called mastoid cells.
6. Mastoiditis is a serious ear infection in the mastoid, the bony protrusion behind the ear. It often arises from an untreated minor ear infection. You may feel a knot or painful lump behind ear, due to the development of a pus-filled cyst.