H91.9 Unspecified hearing loss

The ICD-10-CM code for Unspecified hearing loss is H91.9 (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

H90-H94: Other disorders of ear (H90-H94)

Category H91

28 codes (21 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to H91.9:

• Deafness (acquired) (complete) (hereditary) (partial)
• Deafness (acquired) (complete) (hereditary) (partial) › low frequency
• Deafness (acquired) (complete) (hereditary) (partial) › high frequency

Inclusion Terms

• Deafness NOS
• High frequency deafness
• Low frequency deafness

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