Y99: External cause status notes A single code from category Y99 should be used in conjunction with the external cause code(s) assigned to a record to indicate the status of the person at the time the event occurred. |
| Y99.0: Civilian activity done for income or pay |
| Y99.1: Military activity |
| Y99.2: Volunteer activity |
| Y99.8: Other external cause status |
| Y99.9: Unspecified external cause status |