| Cover | Apr. 19, 2021 |
| Cover [Abstract] | |
| Document Type | 8-K |
| Amendment Flag | false |
| Document Period End Date | Apr. 19, 2021 |
| Entity File Number | 001-36792 |
| Entity Registrant Name | CYTOSORBENTS CORPORATION |
| Entity Central Index Key | 0001175151 |
| Entity Tax Identification Number | 98-0373793 |
| Entity Incorporation, State or Country Code | DE |
| Entity Address, Address Line One | 7 Deer Park Drive |
| Entity Address, Address Line Two | Suite K |
| Entity Address, City or Town | Monmouth Junction |
| Entity Address, State or Province | NJ |
| Entity Address, Postal Zip Code | 08852 |
| City Area Code | 732 |
| Local Phone Number | 329-8885 |
| Written Communications | false |
| Soliciting Material | false |
| Pre-commencement Tender Offer | false |
| Pre-commencement Issuer Tender Offer | false |
| Title of 12(b) Security | common stock, $0.001 par value |
| Trading Symbol | CTSO |
| Security Exchange Name | NASDAQ |
| Entity Emerging Growth Company | false |
