This code system http://terminology.hl7.org/CodeSystem/v2-0489 defines the following codes:
| Code | Display | Definition | V2 Concept Comment | V2 Concept Comment As Published |
| BIO | Biological | Biological | The dangers associated with normal biological materials. I.e. potential risk of unknown infections. Routine biological materials from living subjects. | The dangers associated with normal biological materials. I.e. potential risk of unknown infections. Routine biological materials from living subjects. |
| COR | Corrosive | Corrosive | Material is corrosive and may cause severe injury to skin, mucous membranes and eyes. Avoid any unprotected contact. | Material is corrosive and may cause severe injury to skin, mucous membranes and eyes. Avoid any unprotected contact. |
| ESC | Escape Risk | Escape Risk | The entity is at risk for escaping from containment or control. | The entity is at risk for escaping from containment or control. |
| AGG | Aggressive | Aggressive | A danger that can be associated with certain living subjects, including humans. | A danger that can be associated with certain living subjects, including humans. |
| IFL | MaterialDangerInflammable | MaterialDangerInflammable | Material is highly inflammable and in certain mixtures (with air) may lead to explosions. Keep away from fire, sparks and excessive heat. | Material is highly inflammable and in certain mixtures (with air) may lead to explosions. Keep away from fire, sparks and excessive heat. |
| EXP | Explosive | Explosive | Material is an explosive mixture. Keep away from fire, sparks, and heat. | Material is an explosive mixture. Keep away from fire, sparks, and heat. |
| INF | MaterialDangerInfectious | MaterialDangerInfectious | Material known to be infectious with human pathogenic microorganisms. Those who handle this material must take precautions for their protection. | Material known to be infectious with human pathogenic microorganisms. Those who handle this material must take precautions for their protection. |
| BHZ | Biohazard | Biohazard | Material contains microorganisms that are an environmental hazard. Must be handled with special care. | Material contains microorganisms that are an environmental hazard. Must be handled with special care. |
| INJ | Injury Hazard | Injury Hazard | Material is solid and sharp (e.g., cannulas.) Dispose in hard container. | Material is solid and sharp (e.g., cannulas.) Dispose in hard container. |
| POI | Poison | Poison | Material is poisonous to humans and/or animals. Special care must be taken to avoid incorporation, even of small amounts. | Material is poisonous to humans and/or animals. Special care must be taken to avoid incorporation, even of small amounts. |
| RAD | Radioactive | Radioactive | Material is a source for ionizing radiation and must be handled with special care to avoid injury of those who handle it and to avoid environmental hazards. | Material is a source for ionizing radiation and must be handled with special care to avoid injury of those who handle it and to avoid environmental hazards. |