H95.133 – Mucosal cyst of postmastoidectomy cavity, bilateral ears
ICD-10-CM 2027 diagnosis code · Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified (H95)
- Code
H95.133(claims format:H95133)- Description
- Mucosal cyst of postmastoidectomy cavity, bilateral ears
- 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
- H95 Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified (H95)
- Parent codes
- H95 › H95.1 › H95.13
Related codes in H95.13
Frequently asked questions
What is ICD-10 code H95.133?
H95.133 is the ICD-10-CM code for mucosal cyst of postmastoidectomy cavity, bilateral ears, in the block H95 (Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified (H95)).
Is H95.133 a billable code?
Yes. H95.133 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does H95.133 belong to?
It belongs to category H95 – Intraoperative and postprocedural complications and disorders of ear and mastoid process, not elsewhere classified.
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.