ICD-10 Code H95.123 – Granulation of postmastoidectomy cavity, bilateral ears (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H95.123 – Granulation of postmastoidectomy cavity, bilateral ears
What it is
This code identifies granulation tissue forming in both postmastoidectomy cavities after mastoid surgery. It reflects an abnormal healing response in the surgical ear cavities.
Clinical signs
Patients may have persistent moist tissue, bleeding, drainage, or chronic inflammation in the mastoid cavity. Clinical features vary; refer to documentation.
When to use this code
Use H95.123 when the provider documents granulation tissue in both postmastoidectomy cavities. Code it for postoperative follow-up or evaluation when the finding is clearly stated. If the record only mentions ear pain, drainage, or infection without granulation, check documentation.
Do not use for
Do not use this code for general otitis externa, mastoiditis, or unspecified postoperative ear problems. Do not assign it when granulation is not documented.
Coding tip
Confirm that the note specifies bilateral postmastoidectomy cavity granulation before assigning H95.123.