Background: Nasal endoscopy is a procedure to examine the nasal and paranasal sinus passages with 0 degree nasal endoscopes. Mucormycosis is an aggressive, lifethreatening invasive fungal infection affecting paranasal sinuses, orbits and brain. Early diagnosis of mucormycosis is possible with diagnostic nasal endoscopy (DNE) in covid and post covid high risk patients. Objective: To substantiate the need of nasal endoscopy in high risk covid and post covid patients