ICD-10 Code H74.42 – Polyp of left middle ear (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H74.42 – Polyp of left middle ear
What it is
H74.42 identifies a polyp in the left middle ear. Use it when documentation specifies a polyp arising from the left middle ear space or related middle ear cavity.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include a visible polypoid mass on otoscopic exam and associated ear symptoms such as drainage or hearing change.
When to use this code
Use this code when the provider documents a polyp specifically in the left middle ear. It is appropriate for encounters focused on evaluating, monitoring, or coding that localized middle ear lesion. If the record only says “ear polyp” without side or site, check documentation.
Do not use for
Do not use this code for polyps in the external ear canal, nasal cavity, or other non-middle-ear sites. If the laterality or anatomic location is unclear, you should not assume H74.42.
Coding tip
Verify both the side and the middle ear location in the note before assigning H74.42.