2027 ICD-10-CM Diagnosis Code H74.09Tympanosclerosis, unspecified ear

ICD-10-CM Codes›H60–H95›H65-H75›H74

ICD-10-CM H74.09
CMSSource: CMS FY 2027 ICD-10-CM dataset · Effective Oct 1, 2026 – Sep 30, 2027

H74.09 is a billable ICD-10-CM diagnosis code for tympanosclerosis, unspecified 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. Coders also document this condition as tympanosclerosis. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Diseases of middle ear and mastoid (except otitis media).

Code Identity

ICD-10-CM Code
H74.09
Billable Status
Yes — Valid for Submission
Code Describes
Tympanosclerosis, unspecified ear
Short Description
Tympanosclerosis, unspecified ear
Same as the full description in the CMS dataset.
Parent Code
H74.0
Tympanosclerosis

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH65-H75Diseases of middle ear and mastoid
CategoryH74Other disorders of middle ear mastoid
This CodeH74.09Tympanosclerosis, unspecified ear

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Tympanosclerosis
  • Tympanosclerosis involving tympanic membrane AND ear ossicles
  • Tympanosclerosis involving tympanic membrane only
  • Tympanosclerosis involving tympanic membrane, ear ossicles AND middle ear

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H74.09: its own notes plus those printed at H74 and 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 H74 Other disorders of middle ear mastoid applies to 36 codes
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 EAR002
Diseases of middle ear and mastoid (except otitis media)
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Tympanosclerosis

    calcification of the tympanic membrane and middle ear most often associated with chronic otitis media.

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 H74.09 to ICD-9-CMHistory

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

ICD-9-CM
385.00 Tympanosclerosis NOS
Approximate The match is approximate rather than exact.
ICD-9-CM
385.01 Tympanoscl-tympanic memb
Approximate The match is approximate rather than exact.
ICD-9-CM
385.02 Tympnoscler-tymp/ossicle
Approximate The match is approximate rather than exact.
ICD-9-CM
385.03 Tympanoscler-all parts
Approximate The match is approximate rather than exact.
ICD-9-CM
385.09 Tympnsclr-oth site comb
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 H74.09Overview

What is the ICD-10 code for tympanosclerosis, unspecified ear?

The ICD-10-CM code for tympanosclerosis, unspecified ear is H74.09 (sometimes written as H7409). It is billable on HIPAA-covered claims from October 1, 2026 through September 30, 2027.

Is H74.09 (Tympanosclerosis) a billable code?

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

What MS-DRG does H74.09 group to?

When tympanosclerosis, unspecified 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.

What is the ICD-9 equivalent of H74.09?

Under the General Equivalence Mappings, tympanosclerosis, unspecified ear converts to ICD-9-CM 385.00 (tympanosclerosis NOS), 385.01 (tympanoscl-tympanic memb), and 385.02 (tympnoscler-tymp/ossicle). The mapping is approximate, so confirm the match fits the documentation.