LOINCObservation

LOINC Code 727-8: Hemoglobin distribution width Auto (Bld) [Length]

727-8 is a LOINC code used to identify Hemoglobin distribution width Auto (Bld) [Length] 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 Hemoglobin distribution width. 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 Hemoglobin distribution width. 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: DEPRECATED
  • Order vs observation: Observation
  • Method: Automated count

What it does not mean

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

Key facts

  • Deprecated Hemoglobin distribution width [Length] in Blood by Automated count
  • Hemoglobin distribution width
  • Auto; Automated detection; Blood; Elec; Elect; Electr; Haemoglobin; Hb; HDW; HEMATOLOGY/CELL COUNTS; Hgb; Length; Point in time; QNT; Quan; Quant; Quantitative; Random; 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

Hemoglobin distribution width Auto (Bld) [Length]Deprecated Hemoglobin distribution width [Length] in Blood by Automated countDeprecated HDW Bld AutoHemoglobin distribution widthHEM/BCHemoglobin distribution width, BloodLen

Frequently asked questions

Code details

Code727-8
SystemLOINC
Display nameHemoglobin distribution width Auto (Bld) [Length]
DescriptionHemoglobin distribution width
Short nameDeprecated HDW Bld Auto
ComponentHemoglobin distribution width
PropertyLen
TimingPt
System (specimen)Bld
ScaleQn
MethodAutomated count
ClassHEM/BC
StatusDEPRECATED
Order/ObservationObservation

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released1.0
Last changed2.44

Consumer names

Hemoglobin distribution width, Blood

Part names

Hemoglobin distribution widthLenPtBldQnAutomated countLengthPoint 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 727-8 | HealthAssure