PI HCPCS Level II modifier: Positron emission tomography (pet) or pet/computed tomography (ct) to inform the initial treatment strategy of tumors that are biopsy proven or strongly…
PI is a HCPCS Level II modifier: “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….” It adds this detail to the code it is reported with.
Official description
PIPositron 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
Short description: Pet tumor init tx strat
HCPCS · United States
Medicare details
The indicators CMS publishes with PI in its October 2026 file. They describe Medicare’s handling, not another payer’s.
- Medicare coverage
- Carrier judgment
- Added
- Jul 1, 2009
Where PI sits
- 1GroupHCPCS modifiers
- 2Modifier PIPositron 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
Source and release
- Data release
- HCPCS Level II · October 2026
- Effective date
- Oct 1, 2026
- Publisher
- CMS
This page is built from the HCPCS Level II catalog that Vero Codes reads when it suggests codes: Centers for Medicare & Medicaid Services’s October 2026 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does HCPCS code PI mean?
PI is the HCPCS code for “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” in CMS’s HCPCS Level II October 2026 release.
Where is PI in the HCPCS Level II list?
PI is listed under Modifiers.
Does Medicare cover PI?
CMS lists PI’s Medicare coverage as “Carrier judgment”. Coverage and payment still depend on the patient, the setting, the documentation and the payer.
Which HCPCS Level II release does this page use?
It uses CMS’s October 2026 release, in effect from Oct 1, 2026 to Dec 31, 2026. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.
Codes beside PI
All modifiersP5A moribund patient who is not expected to survive without the operationP6A declared brain-dead patient whose organs are being removed for donor purposesPASurgical or other invasive procedure on wrong body partPBSurgical or other invasive procedure on wrong patientPCWrong surgery or other invasive procedure on patientPDDiagnostic 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 daysPLProgressive addition lensesPMPost mortemPNNon-excepted service provided at an off-campus, outpatient, provider-based department of a hospitalPOExcepted service provided at an off-campus, outpatient, provider-based department of a hospitalPSPositron emission tomography (pet) or pet/computed tomography (ct) to inform the subsequent treatment strategy of cancerous tumors when the beneficiary's treating physician…PTColorectal cancer screening test; converted to diagnostic test or other procedure