H70.221 – Chronic petrositis, right ear
ICD-10-CM 2027 diagnosis code · Diseases of middle ear and mastoid
ICD-10-CM code
H70.221
- Code
H70.221(claims format:H70221)- Description
- Chronic petrositis, 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
- H70 › H70.2 › H70.22
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
H70.2 – Petrositis
Applicable to:
- Inflammation of petrous bone
Related codes in H70.22
Frequently asked questions
What is ICD-10 code H70.221?
H70.221 is the ICD-10-CM code for chronic petrositis, right ear, in the block H65-H75 (Diseases of middle ear and mastoid).
Is H70.221 a billable code?
Yes. H70.221 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does H70.221 belong to?
It belongs to category H70 – Mastoiditis and related conditions.
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.