ICD-10 Code I97.641 – Postprocedural seroma of a circulatory system organ or structure following cardiac bypass (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I97.641 – Postprocedural seroma of a circulatory system organ or structure following cardiac bypass
What it is
I97.641 identifies a seroma that develops after cardiac bypass surgery in a circulatory system organ or structure. It describes a postoperative fluid collection, not an infection or hematoma.
Clinical signs
Clinical features vary; refer to documentation. Typical notes describe localized swelling, a fluctuant postoperative collection, or imaging evidence of fluid after bypass surgery.
When to use this code
Use this code when the provider documents a seroma specifically related to cardiac bypass surgery. Code it only when the postoperative fluid collection is clearly identified as a seroma and linked to the bypass procedure. Check documentation if the record does not state the organ or structure involved.
Do not use for
Do not use this code for routine postoperative edema, hematoma, abscess, or wound dehiscence. If the note does not support a seroma after cardiac bypass, check documentation.
Coding tip
Confirm the complication is documented as postprocedural and tied to cardiac bypass before assigning I97.641.