Acute ethmoidal sinusitis

This code represents an acute inflammatory condition affecting the ethmoid sinuses, characterized by sudden onset and a relatively short duration. It involves the mucous membranes lining the ethmoid air cells, often presenting with pain between the eyes, nasal discharge, and fever.

Use this code when documentation clearly indicates an acute infection or inflammation specifically localized to the ethmoid sinuses. This typically applies to patients presenting with symptoms like periorbital pain, frontal headache, purulent nasal discharge, and tenderness over the ethmoid region, with a recent onset.

• Ensure documentation specifies "acute" and "ethmoidal" to differentiate from chronic or other sinus involvement.
• Do not use for generalized acute sinusitis or sinusitis affecting multiple sinuses unless ethmoidal is the primary or only specified site.
• Consider sequencing with codes for underlying causes (e.g., viral infection) if clearly documented.