2026 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 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

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
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

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Type 2 Excludes

  • mastoiditis H70

Patient EducationClinical

Ear Disorders

Your ear has three main parts: outer, middle and inner. You use all of them in hearing. Sound waves come in through your outer ear. They reach your middle ear, where they make your eardrum vibrate. The vibrations are transmitted through three tiny bones, called ossicles, in your middle ear.

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 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About H74Overview

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.