H95.21 Intraoperative hemorrhage and hematoma of ear and mastoid process complicating a procedure on the ear and mastoid process

The ICD-10-CM code for Intraoperative hemorrhage and hematoma of ear and mastoid process complicating a procedure on the ear and mastoid process is H95.21 (FY2026). It is a billable, claim-ready diagnosis code.

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 H95.21:

• Complication (s) (from) (of) › intraoperative (intraprocedural) › hemorrhage (hematoma) (of) › ear › during procedure on ear and mastoid process
• Complication (s) (from) (of) › intraoperative (intraprocedural) › hemorrhage (hematoma) (of) › mastoid process › during procedure on ear and mastoid process

U.S. Hospital Utilization

H95.21 appeared in too few sampled U.S. inpatient stays in 2023 to report a national estimate (AHRQ suppresses counts of 10 or fewer) — a rare inpatient diagnosis.

Source: National Inpatient Sample (NIS), Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality, 2016–2023. National survey-weighted estimates.

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
• AHRQ — HCUP National Inpatient Sample, Frequencies by Diagnosis Code (2016–2023)