H95.13 Mucosal cyst of postmastoidectomy cavity

The ICD-10-CM code for Mucosal cyst of postmastoidectomy cavity is H95.13 (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

H95: Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified (H95)

Category H95

49 codes (36 billable)

FY2026 Status

Stable since FY2024

Also Known As

ICD-10-CM Alphabetic Index entries that lead to H95.13:

• Complication (s) (from) (of) › postmastoidectomy NEC › cyst, mucosal

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