INDICATIONS AND USAGE

GOZELLIX, after radiolabeling with Ga-68, is for positron emission tomography (PET) of prostate-specific membrane antigen (PSMA) positive lesions in men with prostate cancer:
  • With suspected metastasis who are candidates for initial definitive therapy
  • With suspected recurrence based on elevated serum prostate-specific antigen (PSA) level

Medical Billing Resources

Prior authorization

Most third-party payers require some type of prior authorization (PA) for advanced imaging, and it may be necessary to provide the following information when making a PA request:

  • Patient demographics including name, insurance policy number, and date of birth
  • Physician information including name and tax ID number
  • Facility information including name and tax ID number
  • Setting of care
    • Independent diagnostic testing facility (IDTF)
    • Hospital inpatient
    • Hospital outpatient
  • Date of service
  • Patient diagnosis and relevant ICD-10-CM code(s)
  • Patient clinical notes detailing the relevant diagnosis
  • Relevant CPT and HCPCS codes for services/products to be performed or provided
  • HCPCS NOC code for billing (A9597) and 11-digit NDC number
    • NDC 84552-500-25 for Ga-68 produced from a cyclotron and purified via GE FASTlab or ARTMS QIS, or an Eckert & Ziegler GalliaPharm® Ge 68/Ga-68 generator
    • NDC 84552-500-64 for Ga-68 produced from an IRE Galli Eo Ge 68/Ga-68 generator

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The items listed below may be necessary to obtain a PA decision

Completed PA request form (if required by the payer)

  • Some payers may require specific forms to be completed for certain medications and/or imaging — always verify that the correct form is completed

Letter of medical necessity

  • Be sure to include the Provider ID number in the letter

Documentation that supports the use of the agent

  • Patient clinical notes detailing the relevant diagnosis
  • Relevant laboratory results
  • Product package insert/FDA product labeling

If a request is denied

  • Review the reason for denial and address; the decision will inform if the denial issue is related to coverage policy, clinical appropriateness, or another reason, such as:
    • Incomplete submission
    • Incorrect PA form
    • Payer determination that PET/CT or agent is not appropriate for the patient in question
    • Missing patient notes or other medical information
  • Denied requests for PA can be appealed and it is important to follow the process from the payer—online, appeal letter, or by phone to request a peer-to-peer review
  • Denials should be addressed by the payer in 30 days or less
  • Gozellix® Reimbursement Support can assist with PAs and in appealing denied authorizations

Sample documents

LETTER OF MEDICAL NECESSITY – for educational purposes only

You may need a letter of medical necessity in order to obtain a prior authorization decision for Gozellix and any associated services. A sample letter of medical necessity is provided below.a

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SAMPLE DOCUMENT: HOSPITAL OUTPATIENT (CMS-1450) – for educational purposes only

Gozellix and the associated services provided in a hospital outpatient setting are billed on the UB-04 claim form or its electronic equivalent. A sample UB-04 claim form for billing Gozellix is available for download below.b

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SAMPLE DOCUMENT: PHYSICIAN OFFICE (CMS-1500) – for educational purposes only

Gozellix and the associated services provided in a physician office are billed on the CMS-1500 claim form or its electronic equivalent. A sample CMS-1500 claim form for billing Gozellix is available for download below.b

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aThis document is a modifiable template that can be used by providers when submitting a letter of medical necessity for prior authorization purposes.

bThese sample claim forms are only examples. It is always the provider’s responsibility to determine the appropriate healthcare setting and to submit true and correct documents for the products and services rendered. Providers should contact third-party payers for specific information on their coding, coverage, payment policies, and fee schedules.

Best practices for billing Gozellix

When using Gozellix, follow these steps for successful billing outcomes:

Get to know how PET/CT scans with Gozellix will be covered by the major payers in your area

  • Contact your Regional Field Access Manager (us.reimbursement@telixpharma.com) for assistance, as they have a database of coverage policies for third-party payers

Review your contracts with the payers to see how they will cover Gozellix or if you need to amend your contracts for Gozellix

Perform a benefit investigation for every patient

  • Confirm coverage, co-pay, if there is a deductible, and if prior authorization is required
  • Gozellix Reimbursement Support can assist with benefit investigations

Where prior authorization is required:

  • Determine if the imaging facility you wish to refer your patient to is in-network for the payer
    • Can you complete the prior authorization online or is there a specific form to use?
  • Is there an RBM to work with? Can you obtain that request online or do you need a specific form/worksheet?
Healthcare provider speaking to patient.

Billing information current as of June 2025. Requirements may vary by payer and may change from time to time.

Information provided in this resource is for informational purposes only and does not guarantee that codes will be appropriate or that coverage and reimbursement will result. Customers should consult with their payers for all relevant coverage, coding, and reimbursement requirements. It is the sole responsibility of the provider to select proper codes and ensure the accuracy of all claims used in seeking reimbursement. Neither this resource nor Gozellix Reimbursement Support is intended as legal advice or a substitute for a provider’s independent professional judgment.

HCPs are solely responsible for all decisions related to coding and billing including determining if and under what circumstances it is appropriate to seek reimbursement for products and services and obtaining preauthorization. Telix Pharmaceuticals (US) Inc. does not make any representation or warranty about the completeness or accuracy of this information and will bear no responsibility for the results or consequences of its application.

ARTMS, Alternative Radioisotope Technologies for Medical Science; CMS, Centers for Medicare & Medicaid Services; CT, computed tomography; CPT, Current Procedural Terminology; FDA, Food and Drug Administration; HCP, healthcare provider; HCPCS, Healthcare Common Procedure Coding System; ICD, International Classification of Diseases; ID, identification; NDC, National Drug Code; PET, positron emission tomography; RBM, radiology benefit manager.

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INDICATIONS AND USAGE

GOZELLIX, after radiolabeling with Ga-68, is for positron emission tomography (PET) of prostate-specific membrane antigen (PSMA) positive lesions in men with prostate cancer:
  • With suspected metastasis who are candidates for initial definitive therapy
  • With suspected recurrence based on elevated serum prostate-specific antigen (PSA) level

IMPORTANT SAFETY INFORMATION

WARNINGS AND PRECAUTIONS

Risk for Misinterpretation
Image interpretation errors can occur with GOZELLIX PET. A negative image does not rule out the presence of prostate cancer, and a positive image does not confirm the presence of prostate cancer. Gallium Ga-68 gozetotide uptake is not specific for prostate cancer and may occur with other types of cancer as well as non-malignant processes such as Paget’s disease, fibrous dysplasia, and osteophytosis. Clinical correlation, which may include histopathological evaluation of the suspected prostate cancer site, is recommended.
Imaging Prior to Initial Definitive or Suspected Recurrence Therapy
The performance of GOZELLIX for imaging of biochemically recurrent prostate cancer seems to be affected by serum PSA levels and by site of disease. The performance of GOZELLIX for imaging of metastatic pelvic lymph nodes prior to initial definitive therapy seems to be affected by Gleason score.
Radiation Risks
Gallium Ga-68 gozetotide contributes to a patient’s overall long-term cumulative radiation exposure. Long-term cumulative radiation exposure is associated with an increased risk for cancer. Ensure safe handling to minimize radiation exposure to the patient and healthcare providers. Advise patients to hydrate before and after administration and to void frequently after administration.
Hypersensitivity Reactions to Sulfites
Ascorbic Acid Stabilizer contains sodium metabisulfite, a sulfite that may cause allergic-type reactions including anaphylactic symptoms and life-threatening or less severe asthmatic episodes in certain susceptible people. The overall prevalence of sulfite sensitivity in the general population is unknown and probably low. Sulfite sensitivity is seen more frequently in asthmatic than in non-asthmatic people.

ADVERSE REACTIONS

The safety of gallium Ga-68 gozetotide was evaluated in 960 patients in the PSMA-PreRP and PSMA-BCR studies, each receiving one dose of gallium Ga-68 gozetotide. The average injected activity was 188.7 ± 40.7 MBq (5.1 ± 1.1 mCi). The most commonly reported adverse reactions were nausea, diarrhea, and dizziness, occurring at a rate of <1%.

DRUG INTERACTIONS

Androgen deprivation therapy and other therapies targeting the androgen pathway

Androgen deprivation therapy (ADT) and other therapies targeting the androgen pathway, such as androgen receptor antagonists, can result in changes in uptake of gallium Ga-68 gozetotide in prostate cancer. The effect of these therapies on performance of gallium Ga-68 gozetotide PET has not been established.

Please note that this information is not comprehensive.

Please see the Full Prescribing Information.

You are encouraged to report suspected adverse reactions of prescription drugs to the FDA. Visit MedWatch at www.fda.gov/medwatch or call 1-800-FDA-1088. You may also report adverse reactions to Telix Pharmaceuticals (US) by calling 1-844-455-8638 or emailing pharmacovigilance@telixpharma.com.