ICD-10 Code H95.5 – Postprocedural hematoma and seroma of ear and mastoid process following a procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code H95.5 – Postprocedural hematoma and seroma of ear and mastoid process following a procedure
What it is
H95.5 identifies a collection of blood or clear fluid that develops in the ear or mastoid area after a procedure. Use it when the complication is documented as postprocedural and involves the ear and mastoid process.
Clinical signs
Clinical features vary; refer to documentation. Commonly, the record may note localized swelling, fullness, tenderness, bruising, or a fluctuant mass after surgery or another ear-related procedure.
When to use this code
Use this code when the provider documents a hematoma or seroma as a postoperative or postprocedural complication involving the ear or mastoid process. It may follow otologic surgery, mastoid surgery, or another documented procedure in that region.
Code it only when the complication is clearly linked to the procedure, not when swelling is part of routine healing. If the note does not specify hematoma or seroma, check documentation before assigning H95.5.
Do not use for
Do not use this code for preexisting ear masses, abscesses, or nonspecific postoperative pain without documentation of hematoma or seroma. Do not use it when the complication site is outside the ear or mastoid process.
Coding tip
Confirm the operative note and postoperative assessment both support a postprocedural hematoma or seroma at the ear or mastoid site.