2.6.1. The appendices for an IS-CDD are the same as for a regular CDD.

For reference or comparison, below is what the JCIDS Manual says for the CDD 2021 itself:

2.6.6. Appendix F. EMS Survivability Risk Category. This appendix is used to determine the EMS Survivability Risk Category and describe it IAW Annex C to Appendix G of this enclosure and the EMS Survivability Guidebook which can be found on KM/DS, Reference [4].