2027 ICD-10-CM Diagnosis Code H74Other disorders of middle ear mastoid

ICD-10-CM Codes›H60–H95›H65-H75›H74

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

H74 is a non-billable ICD-10-CM category code for other disorders of middle ear mastoid, so it cannot be submitted on claims. Use a more specific code from this category instead, such as H74.01, H74.02, H74.03, and H74.09.

Code Identity

ICD-10-CM Code
H74
Billable Status
No — Non-Billable Category
Code Describes
Other disorders of middle ear mastoid
Short Description
Other disorders of middle ear mastoid
Same as the full description in the CMS dataset.
Chapter
H65-H75
Diseases of middle ear and mastoid

Code Classification

ChapterH60–H95Diseases of the ear and mastoid process
SectionH65-H75Diseases of middle ear and mastoid
CategoryH74Other disorders of middle ear mastoid
This CodeH74Other disorders of middle ear mastoid

Specific Coding for Other disorders of middle ear mastoidOverview

Non-specific codes like H74 require more characters. Use one of these billable codes instead:

  • H74.0 for Tympanosclerosis

  • Use H74.01 for Tympanosclerosis, right ear

  • Use H74.02 for Tympanosclerosis, left ear

  • Use H74.03 for Tympanosclerosis, bilateral

  • Use H74.09 for Tympanosclerosis, unspecified ear

  • H74.1 for Adhesive middle ear disease

  • Use H74.11 for Adhesive right middle ear disease

  • Use H74.12 for Adhesive left middle ear disease

  • Use H74.13 for Adhesive middle ear disease, bilateral

  • Use H74.19 for Adhesive middle ear disease, unspecified ear

  • H74.2 for Discontinuity and dislocation of ear ossicles

  • Use H74.20 for Discontinuity and dislocation of ear ossicles, unspecified ear

  • Use H74.21 for Discontinuity and dislocation of right ear ossicles

  • Use H74.22 for Discontinuity and dislocation of left ear ossicles

  • Use H74.23 for Discontinuity and dislocation of ear ossicles, bilateral

  • H74.3 for Other acquired abnormalities of ear ossicles

  • H74.31 for Ankylosis of ear ossicles

  • H74.32 for Partial loss of ear ossicles

  • H74.39 for Other acquired abnormalities of ear ossicles

  • H74.4 for Polyp of middle ear

  • Use H74.40 for Polyp of middle ear, unspecified ear

  • Use H74.41 for Polyp of right middle ear

  • Use H74.42 for Polyp of left middle ear

  • Use H74.43 for Polyp of middle ear, bilateral

  • H74.8 for Other specified disorders of middle ear and mastoid

  • H74.8X for Other specified disorders of middle ear and mastoid

  • H74.9 for Unspecified disorder of middle ear and mastoid

  • Use H74.90 for Unspecified disorder of middle ear and mastoid, unspecified ear

  • Use H74.91 for Unspecified disorder of right middle ear and mastoid

  • Use H74.92 for Unspecified disorder of left middle ear and mastoid

  • Use H74.93 for Unspecified disorder of middle ear and mastoid, bilateral

Instructional NotesGuidance

Instructions from the official ICD-10-CM Tabular List that apply to H74: 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.

On H74 itself
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.

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.

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 H74Overview

What is the ICD-10 code for other disorders of middle ear mastoid?

H74 is the ICD-10-CM category for other disorders of middle ear mastoid, but it is a non-billable header: claims need a more specific code from this category, listed on this page.

Is H74 (Other disorders of middle ear mastoid) a billable code?

No. This is a category header that groups the codes for other disorders of middle ear mastoid, and headers cannot be submitted on claims. Claims for other disorders of middle ear mastoid need a more specific code from this category, such as H74.01, H74.02, and H74.03.