ICD-10-CM > H60-H95 > H65-H75 > H68 > H68.1 > H68.13 H68.13 Extrinsic cartilagenous obstruction of Eustachian tube Non-Billable/Non-Specific Applicable To Compression of Eustachian tube Codes H68.131Extrinsic cartilagenous obstruction of Eustachian tube, right earH68.132Extrinsic cartilagenous obstruction of Eustachian tube, left earH68.133Extrinsic cartilagenous obstruction of Eustachian tube, bilateralH68.139Extrinsic cartilagenous obstruction of Eustachian tube, unspecified ear