HCPCS Ambulance Modifiers

Origin and Destination Modifiers

section notes

DD	‑	DX	Diagnostic or therapeutic site other than physician's office or hospital when these are used as origin codes
ED	‑	EX	Residential, domiciliary, custodial facility (other than 1819 facility)
GD	‑	GX	Hospital based ESRD facility
HD	‑	HX	Hospital
ID	‑	IX	Site of transfer (e.g. airport or helicopter pad) between modes of ambulance transport
JD	‑	JX	Freestanding ESRD facility
ND	‑	NX	Skilled nursing facility
PD	‑	PX	Physician’s office
RD	‑	RX	Residence
SD	‑	SX	Scene of accident or acute event

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