What cpt codes are used to bill HIPEC?

The CPT codes commonly used to bill for Hyperthermic Intraperitoneal Chemotherapy (HIPEC) include 96549 for "Chemotherapy administration, not otherwise specified" and 49000 for "Exploratory laparotomy, peritoneal washings for malignancy." Additionally, the surgical procedure may involve codes like 49002 for "Diagnostic laparoscopy, abdomen, peritoneum," depending on the specific circumstances of the procedure. It's important to check with the latest coding guidelines and payer policies for any updates or specific requirements.