| Z01.81 | Encounter for preprocedural examinations | NON-BILLABLE CODE |
| Z01.810 | Encounter for preprocedural cardiovascular examination | BILLABLE CODE |
| Z01.811 | Encounter for preprocedural respiratory examination | BILLABLE CODE |
| Z01.812 | Encounter for preprocedural laboratory examination | BILLABLE CODE |
| Z01.818 | Encounter for other preprocedural examination | BILLABLE CODE |
| Z01.82 | Encounter for allergy testing | BILLABLE CODE |
| Z01.83 | Encounter for blood typing | BILLABLE CODE |
| Z01.84 | Encounter for antibody response examination | BILLABLE CODE |
| Z01.89 | Encounter for other specified special examinations | BILLABLE CODE |
