Versions of Ohio Code 4731.30 - Certificate to recommend medical use of marijuana on LawServer 2023 Ohio Code 4731.30 – Certificate to recommend medical use of marijuana 2020 Ohio Code 4731.30 – Certificate to recommend medical use of marijuana 2018 Ohio Code 4731.30 – Certificate to recommend medical use of marijuana 2016 Ohio Code 4731.30 – Certificate to recommend medical use of marijuana