Can I splice NM-B cable in the ceiling?
The Code language has changed since the quoted link, now (as of 2014 through 2020) saying &quot;...exposed cable wiring and for repair wiring...&quot;, removing the word rewiring. Significance of the change would be up to the local Authority Having Jurisdiction, but many agencies such as the NEW YORK ELECTRICAL INSPECTION AGENCY make it clear this means not for rewiring.
If doing a remodel or renovation you have to demo enough to repair structural, HVAC, plumbing, and electrical up to current codes. No exception is in the NEC for too inconvenient or too expensive.