LOINCActiveBoth

LOINC Code 1959-6: HCO3 (Bld) [Moles/Vol]

1959-6 is a LOINC code used to identify HCO3 (Bld) [Moles/Vol] 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 Bicarbonate. It is commonly used with the system or sample type Bld.

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 Bicarbonate. It is commonly used with the system or sample type Bld.

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

What it does not mean

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

Key facts

  • Bicarbonate [Moles/volume] in Blood
  • Bicarbonate
  • BIC; bicar; Bicarb; Blood; Chemistry; HCO3; Level; Lung; Point in time; Pulmonary; Pulmonology; QNT; Quan; Quant; Quantitative; Random; Respiratory; Substance Concentration; WB; Whole blood

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

HCO3 (Bld) [Moles/Vol]Bicarbonate [Moles/volume] in BloodHCO3 Bld-sCncBicarbonateCHEMBicarbonate, BloodSCnc

Frequently asked questions

Code details

Code1959-6
SystemLOINC
Display nameHCO3 (Bld) [Moles/Vol]
DescriptionBicarbonate
Short nameHCO3 Bld-sCnc
ComponentBicarbonate
PropertySCnc
TimingPt
System (specimen)Bld
ScaleQn
ClassCHEM
Example unitsmmol/L
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

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

Consumer names

Bicarbonate, Blood

Part names

BicarbonateSCncPtBldQnSubstance ConcentrationPoint in time (spot)Blood

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 1959-6 | HealthAssure