| 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 |