LOINCActiveObservation

LOINC Code 49121-7: RBC inclusion bodies Nom (Bld)

49121-7 is a LOINC code used to identify RBC inclusion bodies Nom (Bld) 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 Erythrocyte inclusion bodies. It is commonly used with the system or sample type Bld.

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 Erythrocyte inclusion bodies. 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: Observation

What it does not mean

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

Key facts

  • Erythrocyte inclusion bodies [Identifier] in Blood
  • Erythrocyte inclusion bodies
  • Blood; bod; Body; Discocyte; Erc; Erythrocytes; HEMATOLOGY/CELL COUNTS; Identity or presence; Nominal; Point in time; Random; RBC; RBC inclusions; Red blood cell; Red blood cells; Red blood corpuscle; Red blood corpusles; Red cell; Red cells; 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

RBC inclusion bodies Nom (Bld)Erythrocyte inclusion bodies [Identifier] in BloodRBC inclusions BldErythrocyte inclusion bodiesHEM/BCRed blood cell inclusion bodies, BloodPrid

Frequently asked questions

Code details

Code49121-7
SystemLOINC
Display nameRBC inclusion bodies Nom (Bld)
DescriptionErythrocyte inclusion bodies
Short nameRBC inclusions Bld
ComponentErythrocyte inclusion bodies
PropertyPrid
TimingPt
System (specimen)Bld
ScaleNom
ClassHEM/BC
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.21
Last changed2.73

Consumer names

Red blood cell inclusion bodies, Blood

Part names

Erythrocyte inclusion bodiesPridPtBldNomPresence or IdentityPoint 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 49121-7 | HealthAssure