ICD-10 Code L76.33 – Postprocedural seroma of skin and subcutaneous tissue following a dermatologic procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code L76.33 – Postprocedural seroma of skin and subcutaneous tissue following a dermatologic procedure
What it is
L76.33 identifies a seroma that develops in the skin or subcutaneous tissue after a dermatologic procedure. Use it when documentation clearly links the fluid collection to the skin procedure.
Clinical signs
Typical findings include a localized, fluctuant swelling near the procedure site, sometimes with mild tenderness or drainage. Clinical features vary; refer to documentation.
When to use this code
Use this code when the record states a postprocedural seroma occurred after a dermatologic operation or skin procedure. It fits postoperative fluid collections documented as seroma, not infection or hematoma. Confirm the procedure type and the anatomic site in the note.
Do not use for
Do not use L76.33 for abscess, cellulitis, hematoma, or routine postoperative swelling without a documented seroma. Check documentation if the provider does not specify a seroma.
Coding tip
Code the complication only when the provider documents the seroma as postprocedural and tied to a dermatologic procedure.