ICD-10 Code I97.64 – Postprocedural seroma of a circulatory system organ or structure following a circulatory system procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I97.64 – Postprocedural seroma of a circulatory system organ or structure following a circulatory system procedure
What it is
This code identifies a seroma that develops after a procedure on a blood vessel, heart, or other circulatory structure. It reflects a localized postoperative fluid collection related to the prior circulatory system procedure.
Clinical signs
Typical findings include a soft, fluctuant swelling near the operative site and possible tenderness or pressure. Clinical features vary; refer to documentation for imaging, drainage, or provider confirmation.
When to use this code
Use this code when the record clearly states a postprocedural seroma involving a circulatory system organ or structure after a circulatory procedure. It may be documented after vascular repair, cardiac surgery, or other related interventions. Code it only when the seroma is identified as a postoperative complication.
Do not use for
Do not use this code for ordinary postoperative swelling without a documented seroma. Do not use it if the fluid collection is unrelated to a circulatory system procedure; check documentation.
Coding tip
Verify both the complication and the circulatory procedure site in the operative or progress note before assigning I97.64.