H74.31 Ankylosis of ear ossicles

The ICD-10-CM code for Ankylosis of ear ossicles is H74.31 (FY2026). It is a non-billable category code — select a more specific code below for claims.

Classification

Chapter

8: Diseases of the ear and mastoid process (H60-H95)

Section

H65-H75: Diseases of middle ear and mastoid (H65-H75)

Category H74

48 codes (36 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to H74.31:

• Ankylosis (fibrous) (osseous) (joint) › ear ossicles

Official Coding Guidelines

Chapter 8 reserved for future guideline expansion

8. Chapter 8: Diseases of the Ear and Mastoid Process (H60-H95) Reserved for future guideline expansion

Source: CMS — ICD-10-CM Official Guidelines for Coding and Reporting, FY2026

References

• CMS — ICD-10-CM Official Code Set and Guidelines, FY2026
• CDC/NCHS — ICD-10-CM Files and Browser Tool