Triploidy and polyploidy

This code represents a chromosomal abnormality characterized by the presence of more than two complete sets of chromosomes in a cell. Triploidy specifically refers to three sets of chromosomes (69, XXX; 69, XXY; or 69, XYY), while polyploidy is a broader term for any condition with more than two sets. These conditions are typically lethal, often resulting in spontaneous abortion or severe congenital anomalies.

Use this code when documentation confirms a diagnosis of triploidy or other forms of polyploidy based on cytogenetic analysis. This diagnosis is often made prenatally through amniocentesis or chorionic villus sampling, or postnatally in cases of stillbirth or early infant demise with genetic testing. Supporting documentation includes genetic test results and pathology reports.

• Do not confuse with aneuploidy (e.g., trisomy, monosomy), which involves an abnormal number of individual chromosomes, not entire sets.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter or the underlying cause of congenital anomalies.
• Ensure the medical record explicitly states "triploidy" or "polyploidy" based on definitive genetic testing.