Why is code 111419 for marijuana grown not available as an NAICS code?
File Schedule F and use 111400
(But really, shouldn't NAICS have made it 111420?)
Maybe someone got buzzed up and forgot to add it.
NAICS codes don't go on the tax return.
"Principal Business" codes (which are based on NAICS, but are broader categories) are used on the tax return. That list of codes can be found in the Instructions (or your software).