HL7 v2.9.1 Vocabulary
0.2.0 - ci-build

HL7 v2.9.1 Vocabulary, published by HL7/FO. This guide is not an authorized publication; it is the continuous build for version 0.2.0 built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/frankoemig/hl7.v2.terminology.v291/ and changes regularly. See the Directory of published versions

## ValueSet: Kind of Quantity (2.9.1 - 1.0.0) (Experimental)

Official URL: http://terminology.hl7.org/v2plusvocab/ValueSet/hl7VSkindOfQuantity | Version: 1.0.0
Active as of 2026-03-13 | Computable Name: Hl7VSkindOfQuantity
Other Identifiers: OID:2.16.840.1.113883.21.161, urn:ietf:rfc:3986#Uniform Resource Identifier (URI)#http://terminology.hl7.org/v2plusvocab/ValueSet/v2-0254
Copyright/Legal: HL7 Inc., 2026

Value Set of codes that describe the underlying kind of property represented by an observation. The categories distinguish concentrations from total amounts, molar concentrations from mass concentrations, partial pressures from colors, and so

References

This value set is not used here; it may be used elsewhere (e.g. specifications and/or implementations that use this content)

### Logical Definition (CLD)

- Include all codes defined in `http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` version 📍1.0.0

### Expansion

Expansion performed internally based on codesystem Kind of Quantity (2.9.1 - 1.0.0) v1.0.0 (CodeSystem)

This value set contains 102 concepts

System | Code | Display (en) | Definition | JSON | XML
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ABS | Absorbance | Absorbance |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ACNC | Concentration, Arbitrary Substance | Concentration, Arbitrary Substance |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ACT | Activity | Activity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | APER | Appearance | Appearance |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ARB | Arbitrary | Arbitrary |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | AREA | Area | Area |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ASPECT | Aspect | Aspect |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CACT | Catalytic Activity | Catalytic Activity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CCNT | Catalytic Content | Catalytic Content |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CCRTO | Catalytic Concentration Ratio | Catalytic Concentration Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CFR | Catalytic Fraction | Catalytic Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CLAS | Class | Class |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CNC | Catalytic Concentration | Catalytic Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CNST | Constant | Constant |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | COEF | Coefficient | Coefficient |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | COLOR | Color | Color |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CONS | Consistency | Consistency |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CRAT | Catalytic Rate | Catalytic Rate |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | CRTO | Catalytic Ratio | Catalytic Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | DEN | Density | Density |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | DEV | Device | Device |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | DIFF | Difference | Difference |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ELAS | Elasticity | Elasticity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ELPOT | Electrical Potential (Voltage) | Electrical Potential (Voltage) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ELRAT | Electrical current (amperage) | Electrical current (amperage) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ELRES | Electrical Resistance | Electrical Resistance |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ENGR | Energy | Energy |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ENT | Entitic | Entitic |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ENTCAT | Entitic Catalytic Activity | Entitic Catalytic Activity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ENTNUM | Entitic Number | Entitic Number |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ENTSUB | Entitic Substance of Amount | Entitic Substance of Amount |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | ENTVOL | Entitic Volume | Entitic Volume |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | EQL | Equilibrium | Equilibrium |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | FORCE | Mechanical force | Mechanical force |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | FREQ | Frequency | Frequency |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | IMP | Impression/ interpretation of study | Impression/ interpretation of study |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | KINV | Kinematic Viscosity | Kinematic Viscosity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | LEN | Length | Length |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | LINC | Length Increment | Length Increment |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | LIQ | Liquefaction | Liquefaction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MASS | Mass | Mass |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MCNC | Mass Concentration | Mass Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MCNT | Mass Content | Mass Content |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MCRTO | Mass Concentration Ratio | Mass Concentration Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MFR | Mass Fraction | Mass Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MGFLUX | Magnetic flux | Magnetic flux |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MINC | Mass Increment | Mass Increment |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MORPH | Morphology | Morphology |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MOTIL | Motility | Motility |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MRAT | Mass Rate | Mass Rate |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | MRTO | Mass Ratio | Mass Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | NCNC | Number Concentration | Number Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | NCNT | Number Content | Number Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | NFR | Number Fraction | Number Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | NRTO | Number Ratio | Number Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | NUM | Number | Number |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | OD | Optical density | Optical density |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | OSMOL | Osmolality | Osmolality |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | PRES | Pressure (Partial) | Pressure (Partial) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | PRID | Presence/Identity/Existence | Presence/Identity/Existence |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | PWR | Power (wattage) | Power (wattage) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RANGE | Ranges | Ranges |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RATIO | Ratios | Ratios |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RCRLTM | Reciprocal Relative Time | Reciprocal Relative Time |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RDEN | Relative Density | Relative Density |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | REL | Relative | Relative |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RLMCNC | Relative Mass Concentration | Relative Mass Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RLSCNC | Relative Substance Concentration | Relative Substance Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | RLTM | Relative Time | Relative Time |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SATFR | Saturation Fraction | Saturation Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SCNC | Substance Concentration | Substance Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SCNCIN | Substance Concentration Increment | Substance Concentration Increment |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SCNT | Substance Content | Substance Content |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SCNTR | Substance Content Rate | Substance Content Rate |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SCRTO | Substance Concentration Ratio | Substance Concentration Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SFR | Substance Fraction | Substance Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SHAPE | Shape | Shape |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SMELL | Smell | Smell |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SRAT | Substance Rate | Substance Rate |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SRTO | Substance Ratio | Substance Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SUB | Substance Amount | Substance Amount |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | SUSC | Susceptibility | Susceptibility |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TASTE | Taste | Taste |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TEMP | Temperature | Temperature |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TEMPDF | Temperature Difference | Temperature Difference |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TEMPIN | Temperature Increment | Temperature Increment |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | THRMCNC | Threshold Mass Concentration | Threshold Mass Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | THRSCNC | Threshold Substance Concentration | Threshold Substance Concentration |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TIME | Time (e.g. seconds) | Time (e.g. seconds) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TITR | Dilution Factor (Titer) | Dilution Factor (Titer) |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TMDF | Time Difference | Time Difference |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TMSTP | Time Stamp-Date and Time | Time Stamp-Date and Time |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TRTO | Time Ratio | Time Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | TYPE | Type | Type |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VCNT | Volume Content | Volume Content |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VEL | Velocity | Velocity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VELRT | Velocity Ratio | Velocity Ratio |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VFR | Volume Fraction | Volume Fraction |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VISC | Viscosity | Viscosity |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VOL | Volume | Volume |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VRAT | Volume Rate | Volume Rate |  |
`http://terminology.hl7.org/v2plusvocab/CodeSystem/kindOfQuantity` | VRTO | Volume Ratio | Volume Ratio |  |

Explanation of the columns that may appear on this page:

Level | A few code lists that FHIR defines are hierarchical - each code is assigned a level. In this scheme, some codes are under other codes, and imply that the code they are under also applies
System | The source of the definition of the code (when the value set draws in codes defined elsewhere)
Code | The code (used as the code in the resource instance)
Display | The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application
Definition | An explanation of the meaning of the concept
Comments | Additional notes about how to use the code