Codes used to identify medical devices safety characteristics. These codes are taken from the [NCI Thesaurus](https://ncit.nci.nih.gov/ncitbrowser/pages/home.jsf) and are provided here as a suggestive example.
Copyright
MRI safety definitions reprinted, with permission, from F2503-08 Standard Practice for Marking Medical Devices and Other Items for Safety in the Magnetic Resonance Environment, copyright ASTM International, 100 Barr Harbor Drive, West Conshohocken, PA 19428. See [ASTM F2503](https://www.astm.org/Standards/F2503.htm).
Legenda: Type L=leaf, S=specializable, A=abstract, D=deprecated. NullFlavor OTH (other) suggests text in originalText. HL7 V3: NullFlavors to appear in @nullFlavor attribute instead of @code.