HL7 NR Numeric Range

A practical quick lookup for the NR datatype.
HL7 datatype components NR components from HL7 v2.5.1 Hide components

These are the generated components for the version selected at the top of the page. The article stays practical, and this panel follows the chosen HL7 version.

Components

PosComponentNameTypeTableDescription
1 NR.1 Low Value NM Low Value; Type NM.
2 NR.2 High Value NM High Value; Type NM.

NR is a low-to-high numeric range. It is useful for reference ranges and limits, but only if both ends use the same unit and meaning from the surrounding field.

In this guide, NR appears in CD, DLT, RFR. That used-by list is a good reality check: the datatype is only half the story, and the field that uses it tells you the workflow.

The component panel above is expanded by default because most datatype pages are used as quick lookup pages. Start there for the exact HL7 v2.5.1 shape, then use the notes below for the practical gotchas.

NR-1 to NR-2: Component Quick Read

The generated component panel above is the formal quick lookup. The short version is below so you can scan the shape without counting carets by eye.

  • NR-1 Low Value - Low Value. Type NM.
  • NR-2 High Value - High Value. Type NM.

Practical Notes

Keep numeric values numeric. Do not mix display formatting, unit text, or currency labels into the number component when the datatype has a separate place for that meaning. A format validator for whole numbers or decimals is a simple way to catch this before the receiving system has to complain.

In HL7 Soup Web, click a field that uses NR and the interpretation view will show which component you are sitting in and where that value lives in the raw message. That is especially handy with compact datatypes because one missing caret can move every value after it.

Official and Reference Notes

For formal reference, compare the generated HL7 v2.5.1 panel above with the HL7 v2.5.1 datatype list and the HL7 Terminology data type code system. Local implementation guides can narrow allowed values, tables, and component usage.

Related Datatypes

Related quick lookups: NM.