Below are the NHTSA Crash Severity Levels: which include fatal, injury, and property-damage-only (PDO) crashes.
Source: https://crashstats.nhtsa.dot.gov /Api/Public/ViewPublication/ 812663
Fatal crashes – In which a person involved in a motor crash died within 30 days of the accident. This involves other non-motorists too.
Injury crashes – In which no one died in the accident but, at least one person was injured in one of the following ways: (1) an incapacitating injury; (2) a visible but not incapacitating injury; (3) a possible, not visible injury; or (4) an injury of unknown severity.
PDO crashes – The motor vehicles crashed on a trafficway, but no one suffered any injuries.
For more information on crash severity levels, refer to NHTSA’s National Center for Statistics and Analysis (NCSA) Data Resource Web site at: https://crashstats.nhtsa.dot.gov