Topic: Null Flavors In PCD
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Topic: Null Flavors in IHE PCD Technical Framework
In the IHE PCD Technical Framework, a method of providing further information on the reasons a particular observation is missing may be provided in the OBX segment in the OBX-8 Abnormal Flags, using the codes given in this table:
| No information | NI |
| Not applicable, no proper value | NA |
| Temporarily not available. Information is not available at this time but it is expected that it will be available later. | NAV |
| Numeric measurement function is available but has been deactivated by user. | OFF |
| Masked (as for security) | MSK |
| value not in domain | OTH |
| Not a number | NAN |
| Positive infinity | PINF |
| Negative infinity | NINF |