ICD-10 Code G97.31 – Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code G97.31 – Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure
What it is
This code identifies bleeding or hematoma that occurs during a procedure on a nervous system organ or structure. Use it when the complication happens intraoperatively and is documented as related to the nervous system procedure.
Clinical signs
Clinical features vary; refer to documentation. Typical findings may include unexpected operative bleeding, visible hematoma, or a need to control hemorrhage during the procedure.
When to use this code
Use this code when the surgeon documents intraoperative hemorrhage or hematoma involving a nervous system organ or structure as a complication of the procedure. It applies to operative reports that clearly link the bleeding to the nervous system surgery. Check documentation if the site or timing is unclear.
Do not use for
Do not use it for postoperative hemorrhage, unrelated bleeding, or complications not tied to a nervous system procedure. Do not assign it when the record does not specify an intraoperative nervous system complication.
Coding tip
Code the complication only when the operative note clearly states both the intraoperative timing and the nervous system procedure relationship.