HCPCS A9552: Fluorodeoxyglucose F-18 FDG, Diagnostic

Since A9552 is tied to the PET scan, it is covered only when the underlying PET procedure is medically necessary. This typically includes specific ICD-10-CM codes for various cancers (for oncologic scans) or covered neurological and cardiac indications, as outlined in national or local coverage determinations (NCDs/LCDs).

The code description states "up to 45 millicuries." If a higher dose is medically necessary and administered, you should follow payer-specific guidelines, but generally, one unit of A9552 is reported per study dose, regardless of the exact amount up to the specified maximum.

No. A9552 represents a supply/drug and is typically part of the technical component of the service, billed by the facility where the scan is performed. The physician bills the CPT code with modifier -26 (Professional Component) for the interpretation and report.