Document and Entity Information
Jul. 08, 2022
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jul. 08, 2022
Entity Registrant Name Ra Medical Systems, Inc.
Entity Central Index Key 0001716621
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity File Number 001-38677
Entity Incorporation, State or Country Code DE
Entity Tax Identification Number 38-3661826
Entity Address, Address Line One 2070 Las Palmas Drive
Entity Address, City or Town Carlsbad
Entity Address, State or Province CA
Entity Address, Postal Zip Code 92011
City Area Code 760
Local Phone Number 804-1648
Written Communications false
Soliciting Material false
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Common Stock, par value $0.0001 per share
Trading Symbol RMED
Security Exchange Name NYSEAMER