LOINCActiveBoth

LOINC Code 55107-7: Addendum Document

55107-7 is a LOINC code used to identify Addendum Document 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 Addendum. It is commonly used with the system or sample type ^Patient.

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 Addendum. It is commonly used with the system or sample type ^Patient.

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

  • Addendum Document
  • Addendum
  • Supplementary information or an appendix added to the original document contents.
  • DOC.MISC; Document; Finding; Findings; MISC; Point in time; Random

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

Addendum DocumentAddendum DocAddendumDOC.MISCFindPt^Patient

Frequently asked questions

Code details

Code55107-7
SystemLOINC
Display nameAddendum Document
DescriptionAddendum
Short nameAddendum Doc
ComponentAddendum
PropertyFind
TimingPt
System (specimen)^Patient
ScaleDoc
ClassDOC.MISC
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.27
Last changed2.73

Part names

AddendumFindPt^PatientDocFindingPoint in time (spot)

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 55107-7 | HealthAssure