H66.21 Chronic atticoantral suppurative otitis media, right ear

Billable ICD-10-CM code, FY2026.

Applies from H66 Suppurative and unspecified otitis media

Includes

• suppurative and unspecified otitis media with myringitis

Use additional code

• code to identify:
• exposure to environmental tobacco smoke (Z77.22)
• exposure to tobacco smoke in the perinatal period (P96.81)
• history of tobacco dependence (Z87.891)
• occupational exposure to environmental tobacco smoke (Z57.31)
• tobacco dependence (F17.-)
• tobacco use (Z72.0)

Applies from H66.2 Chronic atticoantral suppurative otitis media

Applicable to

• Chronic atticoantral disease

Use additional code

• code for any associated perforated tympanic membrane (H72.-)

MS-DRG index

Defines the logic of DRG(s) 152-153 in MDC 03.

Approximate ICD-9-CM (GEMs)

• 382.2 Chronic atticoantral suppurative otitis media (approximate)

Code annotations containing back-references to H66.21

Back-references to H66.2

• Code First: H72 Perforation of tympanic membrane ("any associated otitis media (H65.-, H66.1-, H66.2-, H66.3-, H66.4-, H66.9-, H67.-)")

Back-references to H66

• Type 1 Excludes: H73.0 Acute myringitis ("acute myringitis with otitis media (H65, H66)")
• Type 1 Excludes: H73.1 Chronic myringitis ("chronic myringitis with otitis media (H65, H66)")

Diagnosis Index entries for H66.21

• Disease, diseased › atticoantral, chronic › right
• Disease, diseased › persistent mucosal (middle ear) › right

Nearby codes

• H66.11 Chronic tubotympanic suppurative otitis media, right ear
• H66.12 Chronic tubotympanic suppurative otitis media, left ear
• H66.13 Chronic tubotympanic suppurative otitis media, bilateral
• H66.2 Chronic atticoantral suppurative otitis media
• H66.20 Chronic atticoantral suppurative otitis media, unspecified ear
• H66.21 Chronic atticoantral suppurative otitis media, right ear (this code)
• H66.22 Chronic atticoantral suppurative otitis media, left ear
• H66.23 Chronic atticoantral suppurative otitis media, bilateral
• H66.3 Other chronic suppurative otitis media
• H66.3X Other chronic suppurative otitis media
• H66.3X1 Other chronic suppurative otitis media, right ear