Category Y99
Non-Billable Category
FY2027 Dataset
Y99: External cause status
Parent Chapter: Chapter 20: External causes of morbidity
Notice on Coding Specificity: Category Y99 is a 3-character heading and cannot be reported directly on healthcare claims. You must assign one of the specific child codes listed below.
Specific Child Codes in Category Y99
| Code | Official Descriptor | Status | Action |
|---|---|---|---|
| Y99.0 | Civilian activity done for income or pay | Billable Code | View Code |
| Y99.1 | Military activity | Billable Code | View Code |
| Y99.2 | Volunteer activity | Billable Code | View Code |
| Y99.8 | Other external cause status | Billable Code | View Code |
| Y99.9 | Unspecified external cause status | Billable Code | View Code |
| Y99 | External cause status | Non-Billable | View Code |