I have tried the CRA recommended code 621300 which Turbo Tax claims to be invalid
Please take a look at the list below and find the most appropriate industry code.
http://www.statcan.gc.ca/pub/12-501-x/12-501-x2012001-eng.pdf
I would like to know the industry code for athletic therapist that turbo tax uses in its program
Your code based on Statistics Canada or CRA is 621340 or 621300. Please see link for Statistics Canada and CRA code respectively:
https://www23.statcan.gc.ca/imdb/p3VD.pl?CLV=5&CPV=621340&CST=01012017&CVD=380377&Function=getAllExample&MLV=5&TVD=380372&V=337050&VST=01012017
https://www.canada.ca/en/revenue-agency/services/tax/businesses/topics/sole-proprietorships-partnerships/report-business-income-expenses/industry-codes.html