Relevance	Code	Description
	Q90.9	Down syndrome, unspecified
	R29.721	NIHSS score 21
	Q90.2	Trisomy 21, translocation
	Z3A.21	21 weeks gestation of pregnancy
	Q90.1	Trisomy 21, mosaicism (mitotic nondisjunction)
	Q90.0	Trisomy 21, nonmosaicism (meiotic nondisjunction)