ICD-10-CM > H60-H95 > H80-H83 > H80 > H80.1 H80.1 Otosclerosis involving oval window, obliterative Non-Billable/Non-Specific Codes H80.10Otosclerosis involving oval window, obliterative, unspecified earH80.11Otosclerosis involving oval window, obliterative, right earH80.12Otosclerosis involving oval window, obliterative, left earH80.13Otosclerosis involving oval window, obliterative, bilateral