ICD-10-CM > H60-H95 > H65-H75 > H66 > H66.9 H66.9 Otitis media, unspecified Non-Billable/Non-Specific Applicable To Otitis media NOSAcute otitis media NOSChronic otitis media NOS Use Additional code for any associated perforated tympanic membrane (H72.-) Codes H66.90Otitis media, unspecified, unspecified earH66.91Otitis media, unspecified, right earH66.92Otitis media, unspecified, left earH66.93Otitis media, unspecified, bilateral