H68.1 - Obstruction of Eustachian tube
H68.10 - Unspecified obstruction of Eustachian tube
H68.101 - Unspecified obstruction of Eustachian tube, right ear
H68.102 - Unspecified obstruction of Eustachian tube, left ear
H68.103 - Unspecified obstruction of Eustachian tube, bilateral
H68.109 - Unspecified obstruction of Eustachian tube, unspecified ear