ICD-10-CM > H60-H95 > H65-H75 > H66 > H66.2 H66.2 Chronic atticoantral suppurative otitis media Non-Billable/Non-Specific Applicable To Chronic atticoantral disease Use Additional code for any associated perforated tympanic membrane (H72.-) Codes H66.20Chronic atticoantral suppurative otitis media, unspecified earH66.21Chronic atticoantral suppurative otitis media, right earH66.22Chronic atticoantral suppurative otitis media, left earH66.23Chronic atticoantral suppurative otitis media, bilateral