ICD-10-CM 2027 diagnosis code

H91.0Ototoxic hearing loss

Not billable — use a more specific code

H91.0 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About H91.0

H91.0 is the ICD-10-CM diagnosis code for Ototoxic hearing loss. It belongs to category H91 (other and unspecified hearing loss), block H90-H94 (other disorders of ear) and chapter 8 (diseases of the ear and mastoid process). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

Within H91 (other and unspecified hearing loss), H91.0 is specifically for Ototoxic hearing loss. Related codes cover Presbycusis (H91.1), sudden idiopathic hearing loss (H91.2), Deaf nonspeaking, not elsewhere classified (H91.3), other specified hearing loss (H91.8) and unspecified hearing loss (H91.9).

To report this condition, pick the subcode that matches the documentation: H91.01 (right ear), H91.02 (left ear), H91.03 (bilateral) and H91.09 (unspecified ear).

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

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

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under H91.0

Coding notes

Code firstSequence the underlying condition first

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

Use additional codeAdd a secondary code to fully describe the condition

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

Notes that apply from higher levels

Instructions written at a parent level also apply to H91.0.

› From H91 Other and unspecified hearing loss

Excludes1

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-)

Broader instructions also apply from Chapter 8: Diseases of the ear and mastoid process.

Codes whose notes reference H91.0

H90Excludes1

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about H91.0

Is H91.0 billable?: No. H91.0 is a header code. Report one of its more specific subcodes instead.