DICOM PS3.3 2021e - Information Object Definitions
C.8.8.2.5 Single-Frame and Multi-frame Images

If the Multi-frame Module is present and the Cine Module is not present then the Frame Increment Pointer (0028,0009) shall have the Enumerated Value of 00200013 (Instance Number). If the Multi-frame Module and Cine Module are both present then the Frame Increment Pointer (0028,0009) shall have an Enumerated Value of either 00181063 (Frame Time) or 00181065 (Frame Time Vector).

DICOM PS3.3 2021e - Information Object Definitions