The following PTF's are needed to be compatible with IMS v13.
CA Database Management Solutions for IMS for z/OS 16.0
Fix Category: CA.TargetSystem-RequiredService.IMS.V13
IMS Change Accumulation (CCHAG00) ?RO76788 RO76821
IMS Toolkit Common Component (CITKG00) ?RO62221
CA Database Management Solutions for IMS for z/OS 18.0
Fix Category: CA.TargetSystem-RequiredService.IMS.V13
CA Mainframe Configuration Manager (CEW6I00) ?RO84154
CA Database Management Solutions for IMS for z/OS 19.0
Fix Category: CA.TargetSystem-RequiredService.IMS.V13
CA Mainframe Configuration Manager (CEW6J00) ?RO84096
If you only run Compress for IMS, you will still download the whole product, but will need an LMP key to run it.