Paging Dr. 420: Which states let you blaze for better health?

medical marijuana, pot, doctor, prescription, stock, 4x3
istockphoto
medical marijuana, pot, doctor, prescription, stock, 4x3
istockphoto

(CBS) Talk about a grass-roots campaign.

Today's the day each year when marijuana mavens get together to celebrate cannabis and push for laws legalizing its use (the date 4/20 being a close match for 420, pot smoker code for lighting up).

PICTURES - Medial marijuana: 16 places that permit pot for patients

Recreational pot smoking remains a crime in most parts of the U.S., but laws allowing "medical marijuana" are now on the books in 15 states, plus the District of Columbia.

Which places permit pot for patients? Click here to see the full list, along with the specific limitations each state imposes regarding just who can use medical marijuana and how much they can possess.