2027 ICD-10-CM Diagnosis Code H93.012Transient ischemic deafness, left ear

ICD-10-CM Codes›H60–H95›H90-H94›H93

ICD-10-CM H93.012
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H93.012 is a billable ICD-10-CM diagnosis code for transient ischemic deafness, left ear. It is valid on HIPAA claims for fiscal year 2027 (October 1, 2026 through September 30, 2027) 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
H93.012
Billable Status
Yes — Valid for Submission
Code Describes
Transient ischemic deafness, left ear
Short Description
Transient ischemic deafness, left ear
Same as the full description in the CMS dataset.
Parent Code
H93.01
Transient ischemic deafness

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH90-H94Other disorders of ear
CategoryH93Other disorders of ear, not elsewhere classified
This CodeH93.012Transient ischemic deafness, left ear

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H93.012: its own notes plus those printed at H93.0 and Chapter 8. A note printed at a category, block or chapter applies to every code under it.

Excludes1

Not coded here: the excluded code is never reported together with this one, unless the two conditions are unrelated.

From H93.0 Degenerative and vascular disorders of ear applies to 8 codes

Excludes2

Not included here: the excluded condition is not part of this code, but a patient may have both, so both codes may be reported.

From Chapter 8 (H60-H95) Diseases of the ear and mastoid process applies to 653 codes
  • certain conditions originating in the perinatal period (P04-P96)
  • certain infectious and parasitic diseases (A00-B99)
  • complications of pregnancy, childbirth and the puerperium (O00-O9A)
  • congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
  • endocrine, nutritional and metabolic diseases (E00-E88)
  • injury, poisoning and certain other consequences of external causes (S00-T88)
  • neoplasms (C00-D49)
  • symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)

Notes

General instructions on how these codes are used.

From Chapter 8 (H60-H95) Diseases of the ear and mastoid process applies to 653 codes
  • Use an external cause code following the code for the ear condition, if applicable, to identify the cause of the ear condition

Source: CMS ICD-10-CM Tabular List. How to read instructional notes.

Referenced in Other NotesGuidance

Instructional notes printed at other codes that name H93.012, its category, or a range that includes it.

Excludes1 1

These codes carry an Excludes1 note naming H93.012: they are not reported together with it, unless the two conditions are unrelated.

  • H91 Other and unspecified hearing loss
    transient ischemic deafness (H93.01-) names H93.01-, which includes this code

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 H93.012 to ICD-9-CMHistory

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

ICD-9-CM
388.02 Trans ischemic deafness
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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H93.012Overview

What is the ICD-10 code for transient ischemic deafness, left ear?

The ICD-10-CM code for transient ischemic deafness, left ear is H93.012 (sometimes written as H93012). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H93.012 (Transient ischemic deafness) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report transient ischemic deafness, left ear on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H93.012 group to?

When transient ischemic deafness, left ear is the principal diagnosis on an inpatient stay, it groups to MS-DRG 156, 155, 154, with relative weights from 0.6656 to 1.5916 depending on complications. Higher weights mean higher Medicare reimbursement.

Can H93.012 be reported with H91.1?

Not as a rule. The Excludes1 note at H93.0, which applies to H93.012, lists "presbycusis (H91.1)". An Excludes1 note means the excluded code is never reported together with this one; the only exception is when the two conditions are unrelated to each other (Official Guidelines, Section I.A.12.a).

What is the ICD-9 equivalent of H93.012?

Under the General Equivalence Mappings, transient ischemic deafness, left ear converts to ICD-9-CM 388.02 (trans ischemic deafness). The mapping is approximate, so confirm the match fits the documentation.