H74.31Header code — not billable
Ankylosis of ear ossicles
- Chapter
- 8. Diseases of the ear and mastoid process
- Category
- H74
- Effective date
- October 1, 2026
Related codes in category H74
H74Other disorders of middle ear mastoidH74.0TympanosclerosisH74.01Tympanosclerosis, right earYesH74.02Tympanosclerosis, left earYesH74.03Tympanosclerosis, bilateralYesH74.09Tympanosclerosis, unspecified earYesH74.1Adhesive middle ear diseaseH74.11Adhesive right middle ear diseaseYesH74.12Adhesive left middle ear diseaseYesH74.13Adhesive middle ear disease, bilateralYesH74.19Adhesive middle ear disease, unspecified earYesH74.2Discontinuity and dislocation of ear ossicles
Frequently asked questions
What is ICD-10 code H74.31?
H74.31 is an ICD-10-CM diagnosis code for Ankylosis of ear ossicles.
Is H74.31 a billable code?
No. H74.31 is a category/header code, not billable on its own — use one of its more specific child codes instead.
What ICD-10-CM chapter is H74.31 in?
H74.31 falls under Chapter 8: Diseases of the ear and mastoid process.
When did H74.31 become effective?
H74.31 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.
What other codes are related to H74.31?
H74.31 belongs to category H74, which includes 12 other codes — see the related codes list on this page.
ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.