LOINC Code 73821-1: Chr X and Y aneuploidy risk Dosage of chromosome-specific cfDNA Qn (cfDNA)

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 Fetal chromosome X & Y aneuploidy risk. It is commonly used with the system or sample type 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

• Fetal Chromosome X and Y aneuploidy risk [Likelihood] based on Plasma cell-free DNA by Dosage of chromosome-specific cfDNA
• Fetal chromosome X & Y aneuploidy risk
• The probability risk for sex chromosome (X & Y) aneuploidy can be determined based on dosage of chromosome specific circulating cell free (ccf) DNA in maternal plasma, the mother's current age and gestational age. The ccf DNA includes both fetal and maternal DNA. This code is based, but not limited in use to, the submitter's test, Harmony Prenatal Test, which is a non-invasive prenatal test intended to aid in the risk determination of fetal aneuploidy as well as trisomy 13, 18 and 21 in women with singleton pregnancies of at least 10 weeks gestational age.
• Chr X + Y aneup; Chr X + Y aneup risk; Chromosom; Chromosomes; Molecular pathology; MOLPATH; Pl; Plasma; Plsm; Point in time; QNT; Quan; Quant; Quantitative; Random; Risk; Spec

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

Frequently asked questions