Q90-Q99: Chromosomal abnormalities, not elsewhere classified

Q92: Other trisomies and partial trisomies of the autosomes, not elsewhere classified

Other trisomies and partial trisomies of the autosomes are a group of genetic disorders where an individual's cells contain extra copies or partial copies of any of the 22 non-sex chromosomes, called autosomes. This is typically caused by errors in cell division during the formation of eggs or sperm. These extra or partial chromosomes can disturb normal growth and development, leading to a variety of health problems that can range from mild to severe. Common symptoms may include physical abnormalities, intellectual disabilities, and developmental delays. The specific signs, symptoms, and severity can vary greatly depending on which chromosome is affected and exactly how much extra genetic material is present. These conditions are usually present at birth and can affect a person throughout their life, altering normal bodily functions and growth progression. They are generally not curable, but supportive care can help manage symptoms and enhance quality of life.