H74.92 Unspecified disorder of left middle ear and mastoid

Billable ICD-10-CM code, FY2026.

Applies from H74 Other disorders of middle ear mastoid

Excludes2 (not included here)

• mastoiditis (H70.-)

MS-DRG index

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

Approximate ICD-9-CM (GEMs)

• 385.9 Unspecified disorder of middle ear and mastoid (approximate)

Nearby codes

• H74.8X3 Other specified disorders of middle ear and mastoid, bilateral
• H74.8X9 Other specified disorders of middle ear and mastoid, unspecified ear
• H74.9 Unspecified disorder of middle ear and mastoid
• H74.90 Unspecified disorder of middle ear and mastoid, unspecified ear
• H74.91 Unspecified disorder of right middle ear and mastoid
• H74.92 Unspecified disorder of left middle ear and mastoid (this code)
• H74.93 Unspecified disorder of middle ear and mastoid, bilateral