H66.3X2 (Other chronic suppurative otitis media, left ear) compared with H66.3X9 (Other chronic suppurative otitis media, unspecified ear), from the official CMS tabular data. H66.3X2 and H66.3X9 code the same condition on opposite sides.
Same condition; these differ only in which side is documented.
These codes share a category and title and differ only in the side affected. The documentation decides which applies, and a bilateral code is reported only where the code set provides one.
Source: ICD-10-CM tabular list (laterality variant derived from the code title)
Same condition, opposite side. H66.3X2 and H66.3X9 name the same condition on opposite sides of the body.
Same category and title, differing only in which side is affected — the documentation decides which one applies, and a bilateral code is reported only where the code set provides one.
| H66.3X2Other chronic suppurative otitis media, left ear | H66.3X9Other chronic suppurative otitis media, unspecified ear | |
|---|---|---|
| Billing status | Billable | Billable |
| Classification | H60-H95 — Diseases of the Ear and Mastoid Process (H60-H95) | H60-H95 — Diseases of the Ear and Mastoid Process (H60-H95) |
| Definition | Other chronic suppurative otitis media, left ear is a billable ICD-10-CM diagnosis code (H66.3X2). | Other chronic suppurative otitis media, unspecified ear is a billable ICD-10-CM diagnosis code (H66.3X9). |
| Includes | suppurative and unspecified otitis media with myringitis | suppurative and unspecified otitis media with myringitis |
| Use additional code | code for any associated perforated tympanic membrane (H72.-) code to identify: exposure to environmental tobacco smoke (Z77.22) | code for any associated perforated tympanic membrane (H72.-) code to identify: exposure to environmental tobacco smoke (Z77.22) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources