Steve, you're actually on the money, and to add to it; 334.10(B) (you new that already)
(1) For both exposed and concealed work in dry, moist, damp, or corrosive locations, except as prohibited in 334.10(3).
(2) In outside and inside walls of masonary block or tiles.
(3) In a shallow chase in masonry, concrete, or adobe protected against nails or screws by a steel plate at least 1.59 mm (1/16 in) thick and covered with plaster, adobe, or similar finish.
Type NM is for Dry and can be fished into air voids of masonry blocks and tile walls.