LOINC

LOINC Code 64597-8: Technician quality control code [PhenX]

64597-8 is a LOINC code used to identify Technician quality control code [PhenX] 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 Technician quality control code. It is commonly used with the system or sample type ^Patient.

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 Technician quality control code. It is commonly used with the system or sample type ^Patient.

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: TRIAL
  • Method: PhenX

What it does not mean

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

Key facts

  • Technician quality control code [PhenX]
  • Technician quality control code
  • Ident; Identifier; Nominal; Point in time; Random

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

Technician quality control code [PhenX]Technician quality control code PhenXTechnician quality control codePHENXIDPt^Patient

Frequently asked questions

Code details

Code64597-8
SystemLOINC
Display nameTechnician quality control code [PhenX]
DescriptionTechnician quality control code
Short nameTechnician quality control code PhenX
ComponentTechnician quality control code
PropertyID
TimingPt
System (specimen)^Patient
ScaleNom
MethodPhenX
ClassPHENX
StatusTRIAL

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.36
Last changed2.65

Part names

Technician quality control codeIDPt^PatientNomPhenXIdentifierPoint in time (spot)

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 64597-8 | HealthAssure