Balanced rearrangement and structural marker, unspecified

This code describes a chromosomal abnormality where there is an even exchange of genetic material between chromosomes, resulting in a normal amount of genetic information but in an altered arrangement. It also indicates the presence of an unspecified structural marker, which is an additional or altered chromosomal segment whose origin or composition is not fully characterized. This condition is often identified through cytogenetic studies.

Use this code when documentation confirms a balanced chromosomal rearrangement and an unspecified structural marker, and no further specificity regarding the type of rearrangement (e.g., translocation, inversion) or the nature of the marker is provided. This code is appropriate when the genetic testing report indicates these findings without further detail.

• Do not use this code if the specific type of balanced rearrangement (e.g., balanced translocation, balanced inversion) is documented; instead, use a more specific code from the Q91-Q93 range.
• Ensure the documentation explicitly states "unspecified structural marker" or similar language indicating a lack of detailed characterization.
• This code typically represents a constitutional (present at birth) chromosomal anomaly, often identified during genetic counseling or diagnostic workup for developmental delays or reproductive issues.