ICD-10 Code G97.64 – Postprocedural seroma of a nervous system organ or structure following other procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G97.64 – Postprocedural seroma of a nervous system organ or structure following other procedure
What it is
This code identifies a seroma, or localized fluid collection, that develops after a procedure involving a nervous system organ or structure. Use it when the record clearly links the seroma to the prior procedure.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include a postoperative fluid-filled swelling, tenderness, or a palpable collection at the surgical site, with imaging or exam confirming seroma.
When to use this code
Use G97.64 when the provider documents a postprocedural seroma involving the nervous system and names the procedure as the cause. This applies after surgery or another intervention when the complication is distinct from routine healing. Code the complication, not the expected postoperative state.
Do not use for
Do not use this code for a seroma unrelated to a procedure, or when the site is not a nervous system organ or structure. Check documentation if the fluid collection is instead described as abscess, hematoma, or infection.
Coding tip
Confirm both the postprocedural nature and the nervous system site in the operative or progress note before assigning G97.64.