Q91.0
Trisomy 18, meiotic nondisjunction
Sibling codes
Q91Edwards syndrome and Patau syndromeQ91.1Trisomy 18, mosaicism (mitotic nondisjunction)Q91.2Trisomy 18, translocationQ91.3Edwards syndrome, unspecifiedQ91.4Trisomy 13, meiotic nondisjunctionQ91.5Trisomy 13, mosaicism (mitotic nondisjunction)Q91.6Trisomy 13, translocationQ91.7Patau syndrome, unspecified