HCPCS P Modifiers codes

Modifiers	Modifier description
P1	A normal healthy patient
P2	A patient with mild systemic disease
P3	A patient with severe systemic disease
P4	A patient with severe systemic disease that is a constant threat to life
P5	A moribund patient who is not expected to survive without the operation
P6	A declared brain-dead patient whose organs are being removed for donor purposes
PA	Surgical or other invasive procedure on wrong body part
PB	Surgical or other invasive procedure on wrong patient
PC	Wrong surgery or other invasive procedure on patient
PD	Diagnostic or related non diagnostic item or service provided in a wholly owned or operated entity to a patient who is admitted as an inpatient within 3 days
PI	Positron emission tomography (pet) or pet/computed tomography (ct) to inform the initial treatment strategy of tumors that are biopsy proven or strongly suspected of being cancerous based on other diagnostic testing
PL	Progressive addition lenses
PM	Post mortem
PN	Non-excepted service provided at an off-campus, outpatient, provider-based department of a hospital
PO	Excepted service provided at an off-campus, outpatient, provider-based department of a hospital
PS	Positron emission tomography (pet) or pet/computed tomography (ct) to inform the subsequent treatment strategy of cancerous tumors when the beneficiary's treating physician determines that the pet study is needed to inform subsequent anti-tumor strategy
PT	Colorectal cancer screening test; converted to diagnostic test or other procedure