What does this LOINC code represent?

This LOINC code identifies a lab observation, measurement, question, or clinical concept in a standardized format.

Is this enough to understand my test result?

No. The code identifies the test or observation, but the interpretation depends on the actual result, reference range, and clinical context.

LOINC

LOINC Code 15153-0: Bilirubin.indirect Differential light absorption [Mass/Vol]

Name: LOINC Code 15153-0: Bilirubin.indirect Differential light absorption [Mass/Vol]
Creator: HealthAssure Clinical Team
Published: 2026-05-21T11:17:25.112Z

15153-0 is a LOINC code used to identify Bilirubin.indirect Differential light absorption [Mass/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 Bilirubin.non-glucuronidated. It is commonly used with the system or sample type Ser/Plas.

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 Bilirubin.non-glucuronidated. 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: DEPRECATED
Method: Differential light absorption

What it does not mean

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

Key facts

Deprecated Indirect bilirubin [Mass/volume] in Serum or Plasma
Bilirubin.non-glucuronidated
Absorp; Bili; Bilirub Indirect; Bilirubin indirect; Bilirubin non-conjugated; Bilirubin primary; Bilirubin unconjugated; Bilirubins; Billirubin; Bu; Chemistry; Diff; Differl; Differn; Level; Mass concentration; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; SerP; SerPl; SerPlas; Serum; Serum or plasma; SR; TBIL

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

Bilirubin.indirect Differential light absorption [Mass/Vol]Deprecated Indirect bilirubin [Mass/volume] in Serum or PlasmaDeprecated Bilirub Indirect SerPl-mCncBilirubin.non-glucuronidatedCHEMBilirubin.indirect, BloodMCnc

Frequently asked questions

Code details

Code15153-0

SystemLOINC

Display nameBilirubin.indirect Differential light absorption [Mass/Vol]

DescriptionBilirubin.non-glucuronidated

Short nameDeprecated Bilirub Indirect SerPl-mCnc

ComponentBilirubin.non-glucuronidated

PropertyMCnc

TimingPt

System (specimen)Ser/Plas

ScaleQn

MethodDifferential light absorption

ClassCHEM

Example unitsmg/dL

StatusDEPRECATED

Flags

BillableNo

Valid clinical useNo

Source

SourceLOINC

Version2.82

Releasemain

First released1.0k

Last changed2.70

Consumer names

Bilirubin.indirect, Blood

Part names

Bilirubin.non-glucuronidatedMCncPtSer/PlasQnDifferential light absorptionMass ConcentrationPoint 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.