LOINCActiveBoth

LOINC Code 81549-8: SPECT+CT Lymph node

81549-8 is a LOINC code used to identify SPECT+CT Lymph node 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 Multisection^W radionuclide IV. It is commonly used with the system or sample type XXX>Lymph node.

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 Multisection^W radionuclide IV. It is commonly used with the system or sample type XXX>Lymph node.

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: NM.SPECT+CT

What it does not mean

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

Key facts

  • SPECT+CT Lymph node
  • Multisection^W radionuclide IV
  • CAT scan; Computed tomography; Computerized tomography; CorePlaybook; CT scan; Document; Finding; Findings; Imaging; Ln; Misc; Miscellaneous; Other; Playbook; Point in time; Rad; Radiology; Random; RN; RNC; Scan; To be specified in another part of the message; Unspecified; W RNC IV

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

SPECT+CT Lymph nodeSPECT+CT LN W RNC IVMultisection^W radionuclide IVRADFindPtXXX>Lymph node

Frequently asked questions

Code details

Code81549-8
SystemLOINC
Display nameSPECT+CT Lymph node
DescriptionMultisection^W radionuclide IV
Short nameSPECT+CT LN W RNC IV
ComponentMultisection^W radionuclide IV
PropertyFind
TimingPt
System (specimen)XXX>Lymph node
ScaleDoc
MethodNM.SPECT+CT
ClassRAD
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.56
Last changed2.61

Part names

Multisection^W radionuclide IVFindPtXXX>Lymph nodeDocNM.SPECT+CTLymph nodeIVWRadionuclideXXXFindingPoint in time (spot)SPECT+CTIntravenousUnspecified region imaged

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 81549-8 | HealthAssure