LOINCActiveBoth

LOINC Code 75559-5: Comment on Trisomy 18 risk Dosage of chromosome-specific cfDNA Nar (Plasma cell-free+WBC DNA)

75559-5 is a LOINC code used to identify Comment on Trisomy 18 risk Dosage of chromosome-specific cfDNA Nar (Plasma cell-free+WBC DNA) 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 Comment on fetal Trisomy 18 risk. It is commonly used with the system or sample type WBC.DNA+Plas.cfDNA.

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 Comment on fetal Trisomy 18 risk. It is commonly used with the system or sample type WBC.DNA+Plas.cfDNA.

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
  • Method: Dosage of chromosome specific cf DNA

What it does not mean

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

Key facts

  • Comment on fetal Trisomy 18 risk [Text] in Plasma cell-free+WBC DNA by Dosage of chromosome-specific cfDNA Narrative
  • Comment on fetal Trisomy 18 risk
  • This term was developed for, but is not limited in use to, Natera's Panorama noninvasive prenatal test for fetal aneuploidies and microdeletions.
  • Chromosom; Chromosomes; cmmt; cmnt; Com; Comm; Comments; Commt; Edward syndrome; Fet Ts 18 risk comment; Genetics; Heredity; Heritable; Inherited; Leukocytes; Molecular pathology; MOLPATH; MOLPATH.TRISOMY; Narrative; Pl; Plasma; Plsm; Point in time; Random; Remarks; Report; Spec; T18 risk; Text; Ts; Ts 18 risk; WBC.DNA+cfDNA; WBCs; White blood cells

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

Comment on Trisomy 18 risk Dosage of chromosome-specific cfDNA Nar (Plasma cell-free+WBC DNA)Comment on fetal Trisomy 18 risk [Text] in Plasma cell-free+WBC DNA by Dosage of chromosome-specific cfDNA NarrativeFet Ts 18 risk commentComment on fetal Trisomy 18 riskMOLPATH.TRISOMYFetal Comment on trisomy 18 riskTxt

Frequently asked questions

Code details

Code75559-5
SystemLOINC
Display nameComment on Trisomy 18 risk Dosage of chromosome-specific cfDNA Nar (Plasma cell-free+WBC DNA)
DescriptionComment on fetal Trisomy 18 risk
Short nameFet Ts 18 risk comment
ComponentComment on fetal Trisomy 18 risk
PropertyTxt
TimingPt
System (specimen)WBC.DNA+Plas.cfDNA
ScaleNar
MethodDosage of chromosome specific cf DNA
ClassMOLPATH.TRISOMY
StatusACTIVE
Order/ObservationBoth

Flags

BillableNo
Valid clinical useNo

Source

SourceLOINC
Version2.82
Releasemain
First released2.50
Last changed2.73

Consumer names

Fetal Comment on trisomy 18 risk

Part names

Comment on fetal Trisomy 18 riskTxtPtWBC.DNA+Plas.cfDNANarDosage of chromosome specific cf DNATextPoint in time (spot)Plasma cell-free+WBC DNADosage of chromosome-specific cfDNA

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.