LOINCActiveObservation

LOINC Code 20994-0: HCG [Interp]

20994-0 is a LOINC code used to identify HCG [Interp] 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 Choriogonadotropin. It is commonly used with the system or sample type Ser/Plas.

Reviewed by HealthAssure Clinical TeamUpdated 25 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 Choriogonadotropin. It is commonly used with the system or sample type Ser/Plas.

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

  • Choriogonadotropin [Interpretation] in Serum or Plasma
  • Choriogonadotropin
  • CG; Chemistry; Choriogonadotropins total; Chorionic gonadotropin; HCG; Human chorionic gonadotropin; Impression; Impression/interpretation of study; Impressions; Interp; Interpretation; Nominal; Pl; Plasma; Plsm; Point in time; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR

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

HCG [Interp]Choriogonadotropin [Interpretation] in Serum or PlasmaHCG SerPl-ImpChoriogonadotropinCHEMHCG, BloodImp

Frequently asked questions

Code details

Code20994-0
SystemLOINC
Display nameHCG [Interp]
DescriptionChoriogonadotropin
Short nameHCG SerPl-Imp
ComponentChoriogonadotropin
PropertyImp
TimingPt
System (specimen)Ser/Plas
ScaleNom
ClassCHEM
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0m
Last changed2.73

Consumer names

HCG, Blood

Part names

ChoriogonadotropinImpPtSer/PlasNomImpression/interpretation of studyPoint in time (spot)Serum or Plasma

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 20994-0 | HealthAssure