2027 ICD-10-CM Diagnosis Code H80.23Cochlear otosclerosis, bilateral

ICD-10-CM Codes›H60–H95›H80-H83›H80

ICD-10-CM H80.23
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H80.23 is a billable ICD-10-CM diagnosis code for cochlear otosclerosis, bilateral. 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. Coders also document this condition as bilateral cochlear otosclerosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diseases of inner ear and related conditions.

Code Identity

ICD-10-CM Code
H80.23
Billable Status
Yes — Valid for Submission
Code Describes
Cochlear otosclerosis, bilateral
Short Description
Cochlear otosclerosis, bilateral
Same as the full description in the CMS dataset.
Parent Code
H80.2
Cochlear otosclerosis

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH80-H83Diseases of inner ear
CategoryH80Otosclerosis
This CodeH80.23Cochlear otosclerosis, bilateral

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Bilateral cochlear otosclerosis
  • Bilateral otosclerosis of ossicle of ears
  • Cochlear otosclerosis
  • Cochlear otosclerosis of left ear
  • Cochlear otosclerosis of right ear
  • Otosclerosis of ossicle of left ear
  • Otosclerosis of ossicle of right ear

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H80.23: its own notes plus those printed at H80 and Chapter 8. A note printed at a category, block or chapter applies to every code under it.

Includes

Further defines, or gives examples of, the content of the category.

From H80 Otosclerosis applies to 20 codes
  • Otospongiosis

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 EAR003
Diseases of inner ear and related conditions
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Otosclerosis

    formation of spongy bone in the labyrinth capsule which can progress toward the stapes (stapedial fixation) or anteriorly toward the cochlea leading to conductive, sensorineural, or mixed hearing loss. several genes are associated with familial otosclerosis with varied clinical signs.

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 H80.23 to ICD-9-CMHistory

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

ICD-9-CM
387.2 Cochlear otosclerosis
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 H80.23Overview

What is the ICD-10 code for cochlear otosclerosis, bilateral?

The ICD-10-CM code for cochlear otosclerosis, bilateral is H80.23 (sometimes written as H8023). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H80.23 (Cochlear otosclerosis) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report cochlear otosclerosis, bilateral on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

What MS-DRG does H80.23 group to?

When cochlear otosclerosis, bilateral 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.

What is the ICD-9 equivalent of H80.23?

Under the General Equivalence Mappings, cochlear otosclerosis, bilateral converts to ICD-9-CM 387.2 (cochlear otosclerosis). The mapping is approximate, so confirm the match fits the documentation.