ICD-10 Code H95.53 – Postprocedural Seroma of Ear and Mastoid Process Following a Procedure on the Ear and Mastoid Process (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H95.53 – Postprocedural seroma of ear and mastoid process following a procedure on the ear and mastoid process
What it is
H95.53 identifies a seroma that develops after surgery or another procedure involving the ear or mastoid process. It refers to a localized postoperative fluid collection in that specific anatomic site.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include a soft, fluctuant swelling near the operative site, postoperative fullness, or drainage consistent with a fluid collection.
When to use this code
Use this code when the record clearly documents a postprocedural seroma involving the ear or mastoid process after a related procedure. It is appropriate when the provider links the fluid collection to the prior surgery or intervention.
Apply it only for the postoperative complication itself, not for routine healing or expected postoperative swelling. Check documentation for the exact site and the causal procedure.
Do not use for
Do not use this code for seromas in other body sites or for general postoperative edema without a documented seroma. Check documentation if the complication is not clearly linked to ear or mastoid surgery.
Coding tip
Verify that the note states both the seroma and the ear or mastoid procedure association before assigning H95.53.