Q90-Q99: Chromosomal abnormalities, not elsewhere classified
Q95: Balanced rearrangements and structural markers, not elsewhere classified
The conditions grouped under "Balanced rearrangements and structural markers, not elsewhere classified," typically refer to chromosome abnormalities. Chromosomes, which are found in the cells of our bodies, carry genetic information. In balanced rearrangements, the structure of a chromosome has changed, but there is no loss or gain of genetic material, which means that it often does not cause health problems. However, in some cases, it can still lead to issues regarding growth, development, or reproduction if it disrupts critical genes. On the other hand, structural markers indicate that there is an unusual structure to a person's chromosomes, which could potentially lead to health complications, particularly if genetic material is missing or duplicated. Some common signs of these conditions can include physical abnormalities, developmental delays, and infertility. These conditions are usually hereditary, passed down from parents to children through their genes.
Subcodes of Q95:
- Q95.0: Balanced translocation and insertion in normal individual
- Q95.1: Chromosome inversion in normal individual
- Q95.2: Balanced autosomal rearrangement in abnormal individual
- Q95.3: Balanced sex/autosomal rearrangement in abnormal individual
- Q95.4: Individuals with marker heterochromatin
- Q95.5: Individuals with autosomal fragile site
- Q95.8: Other balanced rearrangements and structural markers
- Q95.9: Balanced rearrangement and structural marker, unspecified
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