Can cervical issues (herniated disks, some degeneration) cause numbness, tingling in feet?

Should not. Too high up, lumbar or sacral disc issues could, cervical would be to high....

Related Questions

Can a C4 herniated disk have the only symptoms be foot tingling and numbness?

Yes. Yes if it is an extremely large disc herniation or if there is associated spinal stenosis which could be a condition known as myleopathy.
No. No connection between C4 and the lower extremity.