H66.91 Otitis media, unspecified, 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 H66.9 Otitis media, unspecified

Applicable to

• Otitis media NOS
• Acute otitis media NOS
• Chronic otitis media NOS

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)

• 382.9 Unspecified otitis media (approximate)

Code annotations containing back-references to H66.91

Back-references to H66.9

• Type 1 Excludes: H65.1 Other acute nonsuppurative otitis media ("otitis media (acute) NOS (H66.9)")
• 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)")

Nearby codes

• H66.41 Suppurative otitis media, unspecified, right ear
• H66.42 Suppurative otitis media, unspecified, left ear
• H66.43 Suppurative otitis media, unspecified, bilateral
• H66.9 Otitis media, unspecified
• H66.90 Otitis media, unspecified, unspecified ear
• H66.91 Otitis media, unspecified, right ear (this code)
• H66.92 Otitis media, unspecified, left ear
• H66.93 Otitis media, unspecified, bilateral