LOINCObservation

LOINC Code 15993-9: Rhubarb IgE RAST class (S)

15993-9 is a LOINC code used to identify Rhubarb IgE RAST class (S) in laboratory and clinical observation data. You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges. LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Rheum spp Ab.IgE.RAST class. It is commonly used with the system or sample type Ser.

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

LOINC codes identify tests, measurements, observations, survey items, and clinical questions in a standardized way. It is associated with the component Rheum spp Ab.IgE.RAST class. It is commonly used with the system or sample type Ser.

When is it used?

  • Used in lab systems, EHRs, and clinical data exchange.
  • May identify a test, observation, survey item, or clinical document request rather than a diagnosis.
  • Status: DEPRECATED
  • Order vs observation: Observation

What it does not mean

  • The code identifies the observation or test, not the actual result.

Key facts

  • Deprecated Rhubarb IgE Ab RAST class [Presence] in Serum
  • Rheum spp Ab.IgE.RAST class
  • ABS; Aby; Allergen; Allergens; ALLERGY TESTING; Antby; Anti; Antibodies; Antibody; Autoantibodies; Autoantibody; f178; IgE RAST; Immune globulin E; Immunoglobulin E; Ordinal; Point in time; PR; QL; Qual; Qualitative; Random; Rhubarb; Screen; Serum; SR

Where you may see this code

You may see this code in lab systems, lab reports, EHR exports, interoperability feeds, or other structured clinical data exchanges.

Common synonyms

Rhubarb IgE RAST class (S)Deprecated Rhubarb IgE Ab RAST class [Presence] in SerumDeprecated Rhubarb IgE RAST QlRheum spp Ab.IgE.RAST classALLERGYRhubarb allergy testPrThr

Frequently asked questions

Code details

Code15993-9
SystemLOINC
Display nameRhubarb IgE RAST class (S)
DescriptionRheum spp Ab.IgE.RAST class
Short nameDeprecated Rhubarb IgE RAST Ql
ComponentRheum spp Ab.IgE.RAST class
PropertyPrThr
TimingPt
System (specimen)Ser
ScaleOrd
ClassALLERGY
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0l
Last changed2.75

Consumer names

Rhubarb allergy test

Part names

Rheum spp Ab.IgE.RAST classPrThrPtSerOrdPresence or ThresholdPoint in time (spot)Serum

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from LOINC. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.

LOINC Code 15993-9 | HealthAssure