H91.01 (Ototoxic hearing loss, right ear) compared with H91.09 (Ototoxic hearing loss, unspecified ear), from the official CMS tabular data. H91.01 and H91.09 code the same condition on opposite sides. MedCoder-derived
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. H91.01 and H91.09 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.
| H91.01Ototoxic hearing loss, right ear | H91.09Ototoxic hearing loss, 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 | Ototoxic hearing loss, right ear is a billable ICD-10-CM diagnosis code (H91.01). | Ototoxic hearing loss, unspecified ear is a billable ICD-10-CM diagnosis code (H91.09). |
| Use additional code | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) | code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5) |
| Code first | poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4) | poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources