| R65 | Symptoms and signs specifically associated with systemic inflammation and infection | NON-BILLABLE CODE |
| R65.1 | Systemic inflammatory response syndrome (SIRS) of non-infectious origin | NON-BILLABLE CODE |
| R65.10 | Systemic inflammatory response syndrome (SIRS) of non-infectious origin without acute organ dysfunction | BILLABLE CODE |
| R65.11 | Systemic inflammatory response syndrome (SIRS) of non-infectious origin with acute organ dysfunction | BILLABLE CODE |
| R65.2 | Severe sepsis | NON-BILLABLE CODE |
| R65.20 | Severe sepsis without septic shock | BILLABLE CODE |
