H74.0 – Tympanosclerosis
ICD-10-CM 2027 diagnosis code · Diseases of middle ear and mastoid
ICD-10-CM code
H74.0
- Code
H74.0(claims format:H740)- Description
- Tympanosclerosis
- Billable
- No – use a more specific code below
- 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
Billable codes under H74.0
H74.0 is a header code and cannot be used on claims. Choose the most specific code:
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
- H74.1 – Adhesive middle ear diseaseHeader
- H74.2 – Discontinuity and dislocation of ear ossiclesHeader
- H74.3 – Other acquired abnormalities of ear ossiclesHeader
- H74.4 – Polyp of middle earHeader
- H74.8 – Other specified disorders of middle ear and mastoidHeader
- H74.9 – Unspecified disorder of middle ear and mastoidHeader
Frequently asked questions
What is ICD-10 code H74.0?
H74.0 is the ICD-10-CM code for tympanosclerosis, in the block H65-H75 (Diseases of middle ear and mastoid).
Is H74.0 a billable code?
No. H74.0 is a header code with more specific child codes; report one of the billable codes listed above.
What category does H74.0 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.