2026 ICD-10-CM Diagnosis Code H90.A12Conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side

ICD-10-CM Codes›H60–H95›H90-H94›H90

ICD-10-CM H90.A12
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

H90.A12 is a billable ICD-10-CM diagnosis code for conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side. 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. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Hearing loss.

Code Identity

ICD-10-CM Code
H90.A12
Billable Status
Yes — Valid for Submission
Code Describes
Conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side
Short Description
Condctv hear loss, uni, left ear with rstrcd hear cntra side
Parent Code
H90.A1
Conductive hearing loss, unilateral, with restricted hearing on the contralateral side

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH90-H94Other disorders of ear
CategoryH90Conductive and sensorineural hearing loss
This CodeH90.A12Conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side

Clinical ClassificationClinical

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

CCSR EAR004
Hearing loss
Default principal diagnosis: inpatient Yes · outpatient Yes

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 H90.A12 to ICD-9-CMHistory

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

ICD-9-CM
389.05 Condctv hear loss,unilat
Approximate The match is approximate rather than exact.

Code History & ChangesHistory

Replacement H90.A12 replaces the following previously assigned code(s):

  • H90.2 - Conductive hearing loss, unspecified
FY 2018AddedAdded to the ICD-10-CM code setEffective October 1, 2017.
FY 2019–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H90.A12Overview

Is H90.A12 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does H90.A12 group to?

When conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side 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 H90.A12?

Under the General Equivalence Mappings, conductive hearing loss, unilateral, left ear with restricted hearing on the contralateral side converts to ICD-9-CM 389.05 (condctv hear loss,unilat). 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.