US · guidance
CMS Pub. 100-04, ch. 13, § 60.3.2
Tracer Codes Required for Positron Emission Tomography (PET) Scans
An applicable tracer/radiopharmaceutical code, along with an applicable Current
Procedural Technology (CPT) code, is necessary for claims processing of any Positron
Emission Tomography (PET) scan services. While there are a number of PET tracers
already billable for a diverse number of medical indications, there have been, and may be
in the future, additional PET indications that might require a new PET tracer. Under
those circumstances, the process to request/approve/implement a new code could be
time- intensive. To help alleviate inordinate spans of time between when a national
coverage determination is made, or when the Food and Drug Administration (FDA)
approves a particular radiopharmaceutical for an oncologic indication already approved
by the Centers for Medicare & Medicaid Services (CMS), and when it can be fully
implemented via valid claims processing, CMS has created two new PET
radiopharmaceutical unclassified tracer codes that can be used temporarily. This time
period would be pending the creation/approval/implementation of permanent CPT codes
that would later specifically define their function by CMS in official instructions.
Effective with dates of service on or after January 1, 2018, the following Healthcare
Common Procedure Coding System (HCPCS) codes shall be used ONLY AS
NECESSARY FOR AN INTERIM PERIOD OF TIME under the circumstances
explained here. Specifically, there are two circumstances that would warrant use of the
CPT Code Description
78814 Tumor imaging, positron emission tomography (PET) with concurrently acquired
computed tomography (CT) for attenuation correction and anatomical localization;
limited area (e.g., chest, head/neck)
78815 Tumor imaging, positron emission tomography (PET) with concurrently acquired
computed tomography (CT) for attenuation correction and anatomical localization;
skull base to mid-thigh
78816 Tumor imaging, positron emission tomography (PET) with concurrently acquired
computed tomography (CT) for attenuation correction and anatomical localization;
whole body
below codes: (1) After FDA approval of a PET oncologic indication, or, (2) after CMS
approves coverage of a new PET indication, and ONLY if either of those situations
requires the use of a dedicated PET radiopharmaceutical/tracer that is currently non-existent. Once permanent replacement codes are officially implemented by CMS, use of
the temporary code for that particular indication will simultaneously be discontinued.
NOTE: The following two codes were effective as of January 1, 2017, with the January
2017 quarterly HCPCS update.
A9597 - Positron emission tomography radiopharmaceutical, diagnostic, for tumor
identification, not otherwise classified
A9598 - Positron emission tomography radiopharmaceutical, diagnostic, for non-tumor
identification, not otherwise classified
Effective for claims with dates of service on and after January 1, 2018, when PET
tracer code A9597 or A9598 are present on a claim, that claim must also include:
-an appropriate PET HCPCS code, either 78429, 78430, 78431, 78432, 78433, 78434, 78459, 78491,
78492, 78608, 78811, 78812, 78813, 78814, 78815, or 78816,
-if tumor-related, either the -PI or -PS modifier as appropriate,
-if clinical trial, registry, or study-related outside of NCD220.6.17, PET for Solid
Tumors, clinical trial modifier –Q0,
-if clinical trial, registry, or study-related, all claims require the 8-digit clinical trial
number,
-if Part A OP and clinical trial, registry, or study-related outside of NCD220.6.17, PET
for Solid Tumors, also include condition code 30 and ICD-10 diagnosis Z00.6.
Effective for claims with dates of service on and after January 1, 2018, A/Medicare
Administrative Contractors (MACs) shall line-item deny, and B/MACs shall line-item
reject, PET claims for A9597 or A9598 that don't include the elements noted above as
appropriate.
Contractors shall use the following messaging when line-item denying (Part A) or line-item rejecting (Part B) PET claims containing HCPCS A9597 or A9598:
Remittance Advice Remark Codes (RARC) N386
Claim Adjustment Reason Code (CARC) 50, 96, and/or 119.
Group Code CO (Contractual Obligation) assigning financial liability to the provider (if a
claim is received with a GZ modifier indicating no signed ABN is on file).
(The above new verbiage will supersede any existing verbiage in chapter 13,
section 60.3.2.)
History
(Rev.10881; Issued: 08-06-2021; Effective: 09-07-2021; Implementation: 09-07- 2021)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
ce8dccbac6d57a2611553fd16d6d2ba3f9ceb7dab5d040e3d6a766668a907360
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