2027 ICD-10-CM Diagnosis Code H93.91Unspecified disorder of right ear

ICD-10-CM Codes›H60–H95›H90-H94›H93

ICD-10-CM H93.91
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H93.91 is a billable ICD-10-CM diagnosis code for unspecified disorder of right 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. The code is not accepted as a principal diagnosis by the Medicare Code Editor. Coders also document this condition as disorder of right ear. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Other specified and unspecified disorders of the ear.

Code Identity

ICD-10-CM Code
H93.91
Billable Status
Yes — Valid for Submission
Code Describes
Unspecified disorder of right ear
Short Description
Unspecified disorder of right ear
Same as the full description in the CMS dataset.
Parent Code
H93.9
Unspecified disorder of ear

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH90-H94Other disorders of ear
CategoryH93Other disorders of ear, not elsewhere classified
This CodeH93.91Unspecified disorder of right ear

Code EditsBilling

Medicare Code Editor checks that affect claim validity for H93.91.

Unacceptable principal diagnosis
There are selected codes that describe a circumstance which influences an individual's health status but not a current illness or injury, or codes that are not specific manifestations but may be due to an underlying cause. These codes are considered unacceptable as a principal diagnosis.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Disorder of right ear
  • Lesion of right ear

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H93.91: its own notes plus those printed at Chapter 8. A note printed at a category, block or chapter applies to every code under it.

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.

Clinical ClassificationClinical

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

CCSR EAR006
Other specified and unspecified disorders of the ear
Default principal diagnosis: inpatient No · outpatient Yes

Patient EducationClinical

Ear Disorders

An ear disorder is any condition that changes or harms the shape or structure of your ear. This can include abnormal ear shapes you're born with, injuries that change your ear's shape, and a growth on or in the ear.

The full article covers:

  • What is an ear disorder?
  • What causes ear disorders?
  • What are the symptoms of ear disorders?
  • How are ear disorders diagnosed?
  • How are ear disorders treated?
  • Can ear disorders be prevented?

Read the full article at MedlinePlus

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

Convert H93.91 to ICD-9-CMHistory

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

ICD-9-CM
388.9 Disorder of ear NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
V41.3 Ear problems 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 2017–2026No changes
FY 2027CurrentCurrent code set, no changesEffective October 1, 2026 through September 30, 2027.

Questions About H93.91Overview

What is the ICD-10 code for unspecified disorder of right ear?

The ICD-10-CM code for unspecified disorder of right ear is H93.91 (sometimes written as H9391). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H93.91 (Unspecified disorder of ear) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report unspecified disorder of right ear on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H93.91 group to?

On inpatient claims, unspecified disorder of right ear maps 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 H93.91 be a principal diagnosis?

No. The Medicare Code Editor rejects this code as a principal diagnosis because unspecified disorder of right ear describes a circumstance that influences health status rather than a current illness. Report it as a secondary diagnosis.

What is the ICD-9 equivalent of H93.91?

Under the General Equivalence Mappings, unspecified disorder of right ear converts to ICD-9-CM 388.9 (disorder of ear NOS) and V41.3 (ear problems NEC). The mapping is approximate, so confirm the match fits the documentation.