H74.321 – Partial loss of ear ossicles, right ear
ICD-10-CM 2027 diagnosis code · Diseases of middle ear and mastoid
ICD-10-CM code
H74.321
- Code
H74.321(claims format:H74321)- Description
- Partial loss of ear ossicles, right ear
- Billable
- Yes – valid for HIPAA-covered transactions
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 8. Diseases of the ear and mastoid process (H60-H95)
- Block
- H65-H75 Diseases of middle ear and mastoid
- Parent codes
- H74 › H74.3 › H74.32
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
H74 – Other disorders of middle ear mastoid
Excludes2 (not included here):
- mastoiditis (H70.-)
Related codes in H74.32
Frequently asked questions
What is ICD-10 code H74.321?
H74.321 is the ICD-10-CM code for partial loss of ear ossicles, right ear, in the block H65-H75 (Diseases of middle ear and mastoid).
Is H74.321 a billable code?
Yes. H74.321 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does H74.321 belong to?
It belongs to category H74 – Other disorders of middle ear mastoid.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.