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.
A mastoid effusion is the presence of fluid in the region of the mastoid bone. This can be sterile (harmless fluid) or it can be purulent (pus-like). Both create pain in the area of the ear and behind the hear. This is seen as a complication of middle ear infections.