ICD-10 Code K91.87 – Postprocedural hematoma and seroma of a digestive system organ or structure following a procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code K91.87 – Postprocedural hematoma and seroma of a digestive system organ or structure following a procedure
What it is
K91.87 identifies a hematoma or seroma that develops in a digestive system organ or structure after a procedure. Use it when the postoperative fluid collection is documented as a complication of the procedure.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include localized swelling, tenderness, or imaging evidence of a postoperative fluid collection in the operated digestive structure.
When to use this code
Use K91.87 when the provider documents a postprocedural hematoma or seroma involving a digestive organ or structure, such as after surgery or another invasive procedure. Code it only when the condition is clearly identified as postoperative and related to the procedure. Check documentation if the record does not specify hematoma versus seroma.
Do not use for
Do not use this code for pre-existing hematomas, nonprocedural fluid collections, or complications outside the digestive system. If the note does not link the finding to a procedure, check documentation.
Coding tip
Look for explicit provider wording that the collection is postprocedural and in a digestive system site before assigning K91.87.