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Value Set and Code System Information
| Code System Name | NullFlavor |
| Value Set Code | PHVS_NullFlavor_HL7_V3 |
| Value Set Name | Null Flavor (HL7 V3) |
| Value Set Version | 1 |
Value Set Concept Details
| Concept Code | NA |
| Preferred Concept Name | not applicable |
| Value Set Concept Status | Published |
| Value Set Concept Status Date | 10/31/2008 |
| Value Set Concept Description | Known to have no proper value (e.g., last menstrual period for a male). |
| Sequence |
Code System Concept Details
| Code System Concept Name | not applicable |
| Code System Concept Status | Published |
| Code System Preferred Concept Name | not applicable |
| Date Created | |
| Date Revised | 05/01/2009 |