| F43 | Reaction to severe stress, and adjustment disorders | NON-BILLABLE CODE |
| F43.0 | Acute stress reaction | BILLABLE CODE |
| F43.1 | Post-traumatic stress disorder (PTSD) | NON-BILLABLE CODE |
| F43.10 | Post-traumatic stress disorder, unspecified | BILLABLE CODE |
| F43.12 | Post-traumatic stress disorder, chronic | BILLABLE CODE |
| F43.2 | Adjustment disorders | NON-BILLABLE CODE |
| F43.20 | Adjustment disorder, unspecified | BILLABLE CODE |
| F43.21 | Adjustment disorder with depressed mood | BILLABLE CODE |
| F43.22 | Adjustment disorder with anxiety | BILLABLE CODE |
| F43.23 | Adjustment disorder with mixed anxiety and depressed mood | BILLABLE CODE |
| F43.24 | Adjustment disorder with disturbance of conduct | BILLABLE CODE |
| F43.25 | Adjustment disorder with mixed disturbance of emotions and conduct | BILLABLE CODE |
| F43.29 | Adjustment disorder with other symptoms | BILLABLE CODE |
| F43.8 | Other reactions to severe stress | NON-BILLABLE CODE |
| F43.81 | Prolonged grief disorder | BILLABLE CODE |
| F43.89 | Other reactions to severe stress | BILLABLE CODE |
| F43.9 | Reaction to severe stress, unspecified | BILLABLE CODE |
