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.
Subcodes of Q92:
- Q92.0: Whole chromosome trisomy, meiotic nondisjunction
- Q92.1: Whole chromosome trisomy, mosaicism (mitotic nondisjunction)
- Q92.2: Major partial trisomy
- Q92.3: Minor partial trisomy
- Q92.4: Duplications seen only at prometaphase
- Q92.5: Duplications with other complex rearrangements
- Q92.6: Extra marker chromosomes
- Q92.7: Triploidy and polyploidy
- Q92.8: Other specified trisomies and partial trisomies of autosomes
- Q92.9: Trisomy and partial trisomy of autosomes, unspecified
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