| Code | Display | Comments |
|---|
 _GeneticObservationInterpretation | GeneticObservationInterpretation | |
| CAR | Carrier | |
| Carrier | Carrier | |
| _ObservationInterpretationChange | ObservationInterpretationChange | |
| B | Better | |
| D | Significant change down | |
| U | Significant change up | |
| W | Worse | |
| _ObservationInterpretationExceptions | ObservationInterpretationExceptions | |
| < | Off scale low | |
| > | Off scale high | |
| AC | Anti-complementary substances present | |
| IE | Insufficient evidence | |
| QCF | Quality control failure | |
| TOX | Cytotoxic substance present | |
| _ObservationInterpretationNormality | ObservationInterpretationNormality | |
| A | Abnormal | |
| AA | Critical abnormal | |
| HH | Critical high | |
| LL | Critical low | |
| H | High | |
| H> | Significantly high | |
| HU | Significantly high | |
| L | Low | |
| L< | Significantly low | |
| LU | Significantly low | |
| N | Normal | |
| _ObservationInterpretationSusceptibility | ObservationInterpretationSusceptibility | |
| I | Intermediate | |
| MS | moderately susceptible | |
| NCL | No CLSI defined breakpoint | |
| NS | Non-susceptible | |
| R | Resistant | |
| SYN-R | Synergy - resistant | |
| S | Susceptible | |
| SDD | Susceptible-dose dependent | |
| SYN-S | Synergy - susceptible | |
| VS | very susceptible | |
| EX | outside threshold | |
| HX | above high threshold | |
| LX | below low threshold | |
| HM | Hold for Medical Review | |
| ObservationInterpretationDetection | ObservationInterpretationDetection | |
| IND | Indeterminate | |
| E | Equivocal | |
| NEG | Negative | |
| ND | Not detected | |
| POS | Positive | |
| DET | Detected | |
| ObservationInterpretationExpectation | ObservationInterpretationExpectation | |
| EXP | Expected | |
| UNE | Unexpected | |
| OBX | Interpretation qualifiers in separate OBX segments | |
| ReactivityObservationInterpretation | ReactivityObservationInterpretation | |
| NR | Non-reactive | |
| RR | Reactive | |
| WR | Weakly reactive | |