Medicare Benefits Schedule - Note IN.4.4

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Item 61644 – temporary availability

Item 61644 has been introduced as a direct substitute for MBS item 61325. It may only be used during specified time periods, following a valid request for a single rest myocardial perfusion study to which item 61325 would apply but cannot be performed due to unavailability of thallium-201 (Tl-201).

Item 61644 is being introduced via the Health Insurance (Section 3C Diagnostic Imaging – Additional Nuclear Medicine Services) Determination 2022. This is available on the Federal Register of Legislation.

Item 61644 is available for a period from 1 April 2022 until 30 September 2022. If the supply of Tl-201 is re-established before 30 September 2022, the substitute item may be suspended early to reflect this. Alternatively, the date may be extended if necessary.

The Department will monitor the supply of Tl-201 and in the event that there is a future national shortage in the supply of Tl-201, the item may again become available. Announcements about the commencement of temporary nuclear medicine items will be published on the Department of Health's Nuclear Medicine and Positron Emission Tomography (PET) webpage.


Related Items: 61644

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61644 - Additional Information

Item Start Date:
Description Updated:
Schedule Fee Updated:

Single rest myocardial perfusion study for the assessment of the extent and severity of non‑viable myocardium, with PET, if:

(a) the service is performed because the service to which item 61325 applies cannot be performed due to unavailability of thallous chloride 201 (Tl-201); and

(b) the patient has left ventricular systolic dysfunction and probable or confirmed coronary artery disease; and

(c) the service is performed in conjunction with a rest myocardial perfusion study using technetium-99m; and

(d) the service is requested by a specialist or a consultant physician; and

(e) the service is not associated with a service to which item 11704, 11705, 11707, 11714, 11729 or 11730 applies; and

(f) this service and item 61325 are applicable only twice each 24 months (R)


Item 61644 is a substitute item that may only be used during periods of national shortage of Tl-201. See IN.4.4 of explanatory notes to this Category for further information. 

Fee: $329.00 Benefit: 75% = $246.75 85% = $279.65

(See para IN.4.4, IR.4.2 of explanatory notes to this Category)


  • Assist - Addition/Deletion of (Assist.)
  • Amend - Amended Description
  • Anaes - Anaesthetic Values Amended
  • Emsn - EMSN Change
  • Fee - Fee Amended
  • Renum - Item Number Change (renumbered)
  • New - New Item
  • NewMin - New Item (previous Ministerial Determination)
  • Qfe - QFE Change