| Z04 | Encounter for examination and observation for other reasons | NON-BILLABLE CODE |
| Z04.1 | Encounter for examination and observation following transport accident | BILLABLE CODE |
| Z04.2 | Encounter for examination and observation following work accident | BILLABLE CODE |
| Z04.3 | Encounter for examination and observation following other accident | BILLABLE CODE |
| Z04.4 | Encounter for examination and observation following alleged rape | NON-BILLABLE CODE |
| Z04.41 | Encounter for examination and observation following alleged adult rape | BILLABLE CODE |
| Z04.42 | Encounter for examination and observation following alleged child rape | BILLABLE CODE |
| Z04.6 | Encounter for general psychiatric examination, requested by authority | BILLABLE CODE |
| Z04.7 | Encounter for examination and observation following alleged physical abuse | NON-BILLABLE CODE |
| Z04.71 | Encounter for examination and observation following alleged adult physical abuse | BILLABLE CODE |
| Z04.72 | Encounter for examination and observation following alleged child physical abuse | BILLABLE CODE |
| Z04.8 | Encounter for examination and observation for other specified reasons | NON-BILLABLE CODE |
| Z04.82 | Encounter for examination and observation of victim following forced labor exploitation | BILLABLE CODE |
| Z04.89 | Encounter for examination and observation for other specified reasons | BILLABLE CODE |
| Z04.9 | Encounter for examination and observation for unspecified reason | BILLABLE CODE |
