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LOINC Code 101664-1: Philadelphia-like ALL gene deletion & rearrangement FISH Doc (Bld/Tiss)

101664-1 is a LOINC code used to identify Philadelphia-like ALL gene deletion & rearrangement FISH 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 Philadelphia-like ALL gene deletion & rearrangement. 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 Philadelphia-like ALL gene deletion & rearrangement. 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: FISH

What it does not mean

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

Key facts

in Blood or Tissue by FISH
Philadelphia-like ALL gene deletion & rearrangement
This term can be used to encode testing for the following four kinase-activating chromosome rearrangements, as well as for IKZF1 deletion, which often accompanies Ph-like ALL, plus other gene rearrangements and translocations1q25 rearrangement, ABL2 5q32 rearrangement, PDGFRB 9p24.1 rearrangement, JAK2 9q34 rearrangement, ABL1 7p-, IKZF1/CEP7 t(Xp22.33;var) or t(Yp11.32;var), CRLF2 rearrangement t(Xp22.33;var) or t(Yp11.32;var), P2RY8 rearrangement
Blood; Document; Finding; Findings; Fluorescent in situ hybridization; Molecular pathology; MOLPATH; Point in time; Random; 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

Philadelphia-like ALL gene deletion & rearrangement FISH Doc (Bld/Tiss)in Blood or Tissue by FISHBld/T FISHPhiladelphia-like ALL gene deletion & rearrangementMOLPATHPhiladelphia-like ALL gene deletion & rearrangement, Blood or tissue specimenFind

Frequently asked questions

Code details

Code101664-1
SystemLOINC
Display namePhiladelphia-like ALL gene deletion & rearrangement FISH Doc (Bld/Tiss)
DescriptionPhiladelphia-like ALL gene deletion & rearrangement
Short nameBld/T FISH
ComponentPhiladelphia-like ALL gene deletion & rearrangement
PropertyFind
TimingPt
System (specimen)Bld/Tiss
ScaleDoc
MethodFISH
ClassMOLPATH
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.75
Last changed2.75

Consumer names

Philadelphia-like ALL gene deletion & rearrangement, Blood or tissue specimen

Part names

Philadelphia-like ALL gene deletion & rearrangementFindPtBld/TissDocFISHFindingPoint in time (spot)Blood or TissueFluorescent in situ hybridization (FISH)

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.