LOINCActiveBoth

LOINC Code 46998-1: TCRB and HC rearrangements Molgen Doc (Bld/Tiss)

46998-1 is a LOINC code used to identify TCRB and HC rearrangements Molgen Doc (Bld/Tiss) 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 TCRB & Immunoglobulin heavy chain gene rearrangements. It is commonly used with the system or sample type Bld/Tiss.

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 TCRB & Immunoglobulin heavy chain gene rearrangements. It is commonly used with the system or sample type Bld/Tiss.

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: ACTIVE
  • Order vs observation: Both
  • Method: Molgen

What it does not mean

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

Key facts

  • TCRB and HC gene rearrangements in Blood or Tissue by Molecular genetics method
  • TCRB & Immunoglobulin heavy chain gene rearrangements
  • B-cell Clonality; Blood; Chains; Chn; Clonality; Document; Finding; Findings; Genetics; HC gene Rear; Heredity; Heritable; IgH; Immune globulin; Immuno; Immunoglob; Immunoglobin; Imunoglbon; Imunoglobn; Inherited; Leukemia; Lymphoma; Molecular genetics; Molecular pathology; MOLPATH; MOLPATH.REARRANGEMENTS; PCR; Point in time; Random; Rearr; Rearrangement; TCRB+HC gene Rear; Tissue; Tissue, unspecified; WB; Whole blood; Whole blood or Tissue

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

TCRB and HC rearrangements Molgen Doc (Bld/Tiss)TCRB and HC gene rearrangements in Blood or Tissue by Molecular genetics methodTCRB+HC gene Rear Bld/TTCRB & Immunoglobulin heavy chain gene rearrangementsMOLPATH.REARRANGETCRB and HC Rearrangements, Blood or tissue specimenFind

Frequently asked questions

Code details

Code46998-1
SystemLOINC
Display nameTCRB and HC rearrangements Molgen Doc (Bld/Tiss)
DescriptionTCRB & Immunoglobulin heavy chain gene rearrangements
Short nameTCRB+HC gene Rear Bld/T
ComponentTCRB & Immunoglobulin heavy chain gene rearrangements
PropertyFind
TimingPt
System (specimen)Bld/Tiss
ScaleDoc
MethodMolgen
ClassMOLPATH.REARRANGE
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.19
Last changed2.66

Consumer names

TCRB and HC Rearrangements, Blood or tissue specimen

Part names

TCRB & Immunoglobulin heavy chain gene rearrangementsFindPtBld/TissDocMolgenTCRB and HC gene rearrangementsFindingPoint in time (spot)Blood or TissueMolecular genetics

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 46998-1 | HealthAssure