H80.21 Cochlear otosclerosis, right ear

Billable ICD-10-CM code, FY2026.

Applies from H80 Otosclerosis

Includes

• Otospongiosis

Applies from H80.2 Cochlear otosclerosis

Applicable to

• Otosclerosis involving otic capsule
• Otosclerosis involving round window

MS-DRG index

Defines the logic of DRG(s) 154-156 in MDC 03.

Approximate ICD-9-CM (GEMs)

• 387.2 Cochlear otosclerosis (approximate)

Nearby codes

• H80.11 Otosclerosis involving oval window, obliterative, right ear
• H80.12 Otosclerosis involving oval window, obliterative, left ear
• H80.13 Otosclerosis involving oval window, obliterative, bilateral
• H80.2 Cochlear otosclerosis
• H80.20 Cochlear otosclerosis, unspecified ear
• H80.21 Cochlear otosclerosis, right ear (this code)
• H80.22 Cochlear otosclerosis, left ear
• H80.23 Cochlear otosclerosis, bilateral
• H80.8 Other otosclerosis
• H80.80 Other otosclerosis, unspecified ear
• H80.81 Other otosclerosis, right ear