H90.A22 vs H91.0
H90.A22 (Sensorineural hearing loss, unilateral, left ear, with restricted hearing on the contralateral side) compared with H91.0 (Ototoxic hearing loss), from the official CMS tabular data. Do not report these codes together: the official tabular list marks them Excludes1.
Can these codes be reported together?
No — do not report together. H90.A22 carries an Excludes1 note covering H91.0: “ototoxic hearing loss (H91.0-)”
Sole exception: when the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).
Side by side
| H90.A22Sensorineural hearing loss, unilateral, left ear, with restricted hearing on the contralateral side | H91.0Ototoxic hearing loss | |
|---|---|---|
| Billing status | Billable | Non-billable header |
| Classification | H60-H95 — Diseases of the Ear and Mastoid Process (H60-H95) | H60-H95 — Diseases of the Ear and Mastoid Process (H60-H95) |
| Definition | Sensorineural hearing loss, unilateral, left ear, with restricted hearing on the contralateral side is a billable ICD-10-CM diagnosis code (H90.A22). | Ototoxic hearing loss is a non-billable ICD-10-CM category code (H91.0). |
| Use additional code | — | 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) |
Derived from the official CMS ICD-10-CM tabular data (FY2026). Not billing advice; verify sequencing rules for the encounter. All data sources