H91.0 – Ototoxic hearing loss

ICD-10-CM 2027 diagnosis code · Other disorders of ear

Non-billable header

ICD-10-CM code H91.0

Code: H91.0 (claims format: H910)
Description: Ototoxic hearing loss
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 8. Diseases of the ear and mastoid process (H60-H95)
Block: H90-H94 Other disorders of ear
Parent codes: H91

Billable codes under H91.0

H91.0 is a header code and cannot be used on claims. Choose the most specific code:

H91.01 – Ototoxic hearing loss, right earBillable
H91.02 – Ototoxic hearing loss, left earBillable
H91.03 – Ototoxic hearing loss, bilateralBillable
H91.09 – Ototoxic hearing loss, unspecified earBillable

Notes for H91.0

Code first:

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

Use additional code:

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

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

H91 – Other and unspecified hearing loss

Excludes1 (not coded here):

abnormal auditory perception (H93.2-)
hearing loss as classified in H90.-
impacted cerumen (H61.2-)
noise-induced hearing loss (H83.3-)
psychogenic deafness (F44.6)
transient ischemic deafness (H93.01-)

Related codes in H91

H91.1 – PresbycusisHeader
H91.2 – Sudden idiopathic hearing lossHeader
H91.3 – Deaf nonspeaking, not elsewhere classifiedBillable
H91.8 – Other specified hearing lossHeader
H91.9 – Unspecified hearing lossHeader

Frequently asked questions

What is ICD-10 code H91.0?

H91.0 is the ICD-10-CM code for ototoxic hearing loss, in the block H90-H94 (Other disorders of ear).

Is H91.0 a billable code?

No. H91.0 is a header code with more specific child codes; report one of the billable codes listed above.

What category does H91.0 belong to?

It belongs to category H91 – Other and unspecified hearing loss.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.