Current

Y99 — External cause status

Part of Chapter 20: External causes of morbidity , block Supplementary factors related to causes of morbidity classified elsewhere (Y90-Y99) .

Official Notes

Note

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.

Child Codes

Y99.0 Civilian activity done for income or pay Billable
Y99.1 Military activity Billable
Y99.2 Volunteer activity Billable
Y99.8 Other external cause status Billable
Y99.9 Unspecified external cause status Billable

Referenced By

Official notes on these codes cite Y99.

Y93 Activity codes

FY 2027 effective October 1, 2026 · CDC NCHS and CMS