CFR › Title 21 › Part 870 › §870.128021 CFR §870.1280Verified against eCFR.gov as of June 20, 2026View official text on eCFR.gov ↗Copy link(a)Identification. A steerable catheter is a catheter used for diagnostic and monitoring purposes whose movements are directed by a steering control unit.(b)Classification. Class II (performance standards).