ICD-10-CM > H60-H95 > H65-H75 > H68 > H68.1 > H68.10 H68.10 Unspecified obstruction of Eustachian tube Non-Billable/Non-Specific Codes H68.101Unspecified obstruction of Eustachian tube, right earH68.102Unspecified obstruction of Eustachian tube, left earH68.103Unspecified obstruction of Eustachian tube, bilateralH68.109Unspecified obstruction of Eustachian tube, unspecified ear