ICD-10 Code H95.12 – Granulation of postmastoidectomy cavity (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H95.12 – Granulation of postmastoidectomy cavity
What it is
H95.12 identifies granulation tissue forming in a postmastoidectomy cavity after ear surgery. Use it when the chart documents abnormal healing tissue in the mastoid cavity.
Clinical signs
Clinical features vary; refer to documentation. Commonly noted findings include persistent granulation tissue, chronic drainage, or a nonhealing surgical cavity on otologic examination.
When to use this code
Use this code when the provider specifically documents granulation in a postmastoidectomy cavity. It fits follow-up visits, postoperative complications, or chronic cavity care when the issue is the granulation tissue itself.
If the record only mentions ear pain, infection, or general postoperative status without granulation, check documentation before coding H95.12. Code the documented condition, not the suspected cause.
Do not use for
Do not use this code for uncomplicated mastoidectomy follow-up or for other postoperative ear findings that are not granulation tissue. Check documentation if the cavity problem is described differently.
Coding tip
Assign H95.12 only when granulation of the postmastoidectomy cavity is explicitly documented.