H70.209 Unspecified petrositis, unspecified ear

Billable ICD-10-CM code, FY2026.

Applies from H70.2 Petrositis

Applicable to

• Inflammation of petrous bone

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 383.20 Petrositis, unspecified (approximate)

Code annotations containing back-references to H70.209

Back-references to H70.2

• Type 2 Excludes: M86 Osteomyelitis ("petrous bone (H70.2-)")

Back-references to H70

• Type 2 Excludes: H74 Other disorders of middle ear mastoid ("mastoiditis (H70.-)")

Nearby codes

• H70.2 Petrositis
• H70.20 Unspecified petrositis
• H70.201 Unspecified petrositis, right ear
• H70.202 Unspecified petrositis, left ear
• H70.203 Unspecified petrositis, bilateral
• H70.209 Unspecified petrositis, unspecified ear (this code)
• H70.21 Acute petrositis
• H70.211 Acute petrositis, right ear
• H70.212 Acute petrositis, left ear
• H70.213 Acute petrositis, bilateral
• H70.219 Acute petrositis, unspecified ear