I'm finally getting to the electrical in our build, now that we are dried in. Although I will be running it, when the electrician who brought the service to the house came by and saw how I started running the NM cable in a saw slot in the foam, he commented that it needed to be UF type. I've read and reread NEC 314 and find no mention of this. The only thing I see is where it disallows NM to be used in shallow chases in masonry, cement or adobe that are then covered with plaster etc. My read on this is the chase I'm creating is in the insulation, not within the cement itself and this provision doesn't apply. What have others used for cable type?

Yes, NM electrical cable is entirely acceptable for ICF. We hot knife the EPS channel between the webs to the concrete, place the NM electrical cable and use scrap wire to hold it against the concrete, foam the cavity, and then rasp flush/smooth before doing drywall. The objective is to keep the NM electrical cable from being damaged from a screw or nail in future.

Thanks Sail
That's basically how I was planning. It concerns me
that the electrician thinks differently and I assume from his experience with the inspector.
I'll try to get hold of the dept in Santa Fe by phone to ask but it's not very likely to get hold of anyone. Can't even seem to get inspected these days. But that's another story.

Yeah, you're best off to check with the inspector, although the electrician is mistaken. If the inspector is inclined to say the same thing as the electrician just calmly ask him to explain what code provisions he is basing that on. Occasionally some inspectors like to make up their own rules, which legally they cannot do. Forcefully asking for an explanation is not the same as arguing. If you argue, you will lose, even if you are correct.

Yes, I agree. You can't argue but you can be firm in asking for the code reference.
I saw a sign on an inspector's office once when I was still working. It said " Arguing with an inspector is like wrestling a pig. You eventually realize the pig likes it"