LOINCActiveBoth

LOINC Code 81558-9: SPECT Brain W Tc-99m IV

81558-9 is a LOINC code used to identify SPECT Brain W Tc-99m IV 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 Tc-99m IV. It is commonly used with the system or sample type Head>Brain.

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 Tc-99m IV. It is commonly used with the system or sample type Head>Brain.

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

What it does not mean

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

Key facts

  • SPECT Brain W Tc-99m IV
  • Multisection^W Tc-99m IV
  • 99 mTC; 99mTc; Brain; Cerebral; Cerebrum; CorePlaybook; Cranial; Cranium; Document; Finding; Findings; Head; Imaging; Intracranial; Playbook; Point in time; Rad; RADIOLOGY; Random; Scan; Skull; TC-99CM; Tc99m; TC-99M; Technetium 99m; W Tc99mIV

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 Brain W Tc-99m IVSPECT Brain W Tc99mIVMultisection^W Tc-99m IVRADFindPtHead>Brain

Frequently asked questions

Code details

Code81558-9
SystemLOINC
Display nameSPECT Brain W Tc-99m IV
DescriptionMultisection^W Tc-99m IV
Short nameSPECT Brain W Tc99mIV
ComponentMultisection^W Tc-99m IV
PropertyFind
TimingPt
System (specimen)Head>Brain
ScaleDoc
MethodNM.SPECT
ClassRAD
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Part names

Multisection^W Tc-99m IVFindPtHead>BrainDocNM.SPECTHeadIVWBrainNMSPECTTc-99mFindingPoint in time (spot)Intravenous

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 81558-9 | HealthAssure