ICD-11 synonym : nonsuppurative otitis media, not specified as acute or chronic; allergic otitis media NOS; exudative otitis media NOS; transudative otitis media; catarrhal otitis media NOS; secretory otitis media; otitis media with effusion; mucoid otitis media; seromucinous otitis media nos; otitis media with nonpurulent effusion; serous otitis media NOS;