2026 ICD-10-CM Diagnosis Code H91.09Ototoxic hearing loss, unspecified ear

ICD-10-CM Codes›H60–H95›H90-H94›H91

ICD-10-CM H91.09
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H91.09 is a billable ICD-10-CM diagnosis code for ototoxic hearing loss, unspecified ear. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 154 through 156. Coders also document this condition as acquired sensorineural hearing loss. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Drug induced or toxic related condition and Hearing loss.

Code Identity

ICD-10-CM Code
H91.09
Billable Status
Yes — Valid for Submission
Code Describes
Ototoxic hearing loss, unspecified ear
Short Description
Ototoxic hearing loss, unspecified ear
Same as the full description in the CMS dataset.
Parent Code
H91.0
Ototoxic hearing loss

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH90-H94Other disorders of ear
CategoryH91Other and unspecified hearing loss
This CodeH91.09Ototoxic hearing loss, unspecified ear

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Acquired sensorineural hearing loss
  • Drug ototoxicity - deafness
  • Ototoxicity
  • Ototoxicity - deafness
  • Toxic deafness

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR INJ030
Drug induced or toxic related condition
Default principal diagnosis: inpatient No · outpatient No
CCSR EAR004
Hearing loss
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Ototoxicity

    damage to the ear or its function secondary to exposure to toxic substances such as drugs used in chemotherapy; immunotherapy; or radiation.

  • Ototoxicity

    damage to the inner ear as a result of exposure to drugs or chemicals.

  • Phototoxicity Study|PHOTOTOXICITY

    a study of the effect of an agent on the skin or eyes, such that it induces a sensitivity to sunlight or other forms of light.

  • Phototoxicity|phototoxicity

    a nonimmunologic, chemically induced type of photosensitivity.

Patient EducationClinical

Hearing Disorders and Deafness

It's frustrating to be unable to hear well enough to enjoy talking with friends or family. Hearing disorders make it hard, but not impossible, to hear. They can often be helped. Deafness can keep you from hearing sound at all.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert H91.09 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
389.8 Hearing loss NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H91.09Overview

Is H91.09 (Ototoxic hearing loss) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report ototoxic hearing loss, unspecified ear on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H91.09 group to?

When ototoxic hearing loss, unspecified ear is the principal diagnosis on an inpatient stay, it groups to MS-DRG 154, 155, 156, with relative weights from 0.6911 to 1.5635 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of H91.09?

Under the General Equivalence Mappings, ototoxic hearing loss, unspecified ear converts to ICD-9-CM 389.8 (hearing loss NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.