LOINCActiveObservation

LOINC Code 30385-9: Erythrocyte (Bld) [DistWidth]

30385-9 is a LOINC code used to identify Erythrocyte (Bld) [DistWidth] 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. 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. 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 [DistWidth] in Blood
  • Erythrocyte
  • The RDW-CV is the ratio of the variation in width to the mean width ot the RBC volume distribution curve taken at +/- 1CV.
  • Blood; Discocyte; Erc; Erythrocytes; HEMATOLOGY/CELL COUNTS; Point in time; QNT; Quan; Quant; Quantitative; Random; RBC; 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

Erythrocyte (Bld) [DistWidth]Erythrocyte [DistWidth] in BloodErythrocyte DistWidth BldErythrocyteHEM/BCRed Blood Cell (RBC), BloodDistWidth

Frequently asked questions

Code details

Code30385-9
SystemLOINC
Display nameErythrocyte (Bld) [DistWidth]
DescriptionErythrocyte
Short nameErythrocyte DistWidth Bld
ComponentErythrocyte
PropertyDistWidth
TimingPt
System (specimen)Bld
ScaleQn
ClassHEM/BC
Example units%
StatusACTIVE
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.04
Last changed2.81

Consumer names

Red Blood Cell (RBC), Blood

Part names

ErythrocyteDistWidthPtBldQnPoint 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 30385-9 | HealthAssure