MCMCB Pro
H91.0

H91.0Ototoxic hearing loss

Non-billable headerICD-10-CM

H91.0 is a non-billable header ICD-10-CM code for ototoxic hearing loss. It cannot be billed on its own: choose one of the more specific child codes below.

Code first

The underlying condition must be sequenced before this code.

  • poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

Use additional code

Add a secondary code to capture the detail described below.

  • code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Other codes that can never be billed with H91.0

These codes carry an Excludes1 note pointing at H91.0. The conflict binds both ways, but ICD-10-CM only writes it down on one side — so you would not find this by reading H91.0 alone.

  • H90Conductive and sensorineural hearing loss

Risk adjustment

H91.0 does not map to an HCC and does not risk-adjust under CMS-HCC V28. That is normal — most ICD-10 codes do not. It still needs to be coded correctly; it just will not move a RAF score.

Code to one of these instead H91.0

4 child codes. Green means billable.

Related codes at this level

Codes that share H91. If H91.0 is not quite right, the correct code is usually one of these.

Questions about H91.0

Is H91.0 a billable ICD-10-CM code?
No. H91.0 is a non-billable header code. Code to a higher level of specificity using one of its child codes.
Where does H91.0 sit in the tabular list?
Diseases of the ear and mastoid process (H60-H95), in the block Other disorders of ear (H90-H94).
ICD-10-CMFY2026-Apr· effective April 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release — see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.