LOINCActiveObservation

LOINC Code 49549-9: Referral lab test method

49549-9 is a LOINC code used to identify Referral lab test method 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 Referral lab test method. It is commonly used with the system or sample type Referral lab test.

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 Referral lab test method. It is commonly used with the system or sample type Referral lab test.

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: Observation

What it does not mean

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

Key facts

  • Referral lab test method
  • Meth; Method of; MISC; Narrative; Point in time; Random; Ref Lab Test; Ref lab test method; Report; Test mthd; Typ

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

Referral lab test methodRef lab test methodMISCTypePtReferral lab testNar

Frequently asked questions

Code details

Code49549-9
SystemLOINC
Display nameReferral lab test method
Short nameRef lab test method
ComponentReferral lab test method
PropertyType
TimingPt
System (specimen)Referral lab test
ScaleNar
ClassMISC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.22
Last changed2.73

Consumer names

Referral lab test method

Part names

Referral lab test methodTypePtReferral lab testNarPoint 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 49549-9 | HealthAssure