Other balanced rearrangements and structural markers

This code signifies the presence of chromosomal abnormalities characterized by balanced rearrangements, such as translocations or inversions, where there is no net gain or loss of genetic material. It also includes structural marker chromosomes that do not fit into more specific categories. These genetic variations may be identified prenatally, postnatally, or during genetic counseling for reproductive concerns.

Use this code when genetic testing reports confirm a balanced chromosomal rearrangement or an unclassifiable structural marker chromosome. This is often seen in individuals who are phenotypically normal but are carriers, or in cases where such rearrangements are identified during infertility workups or recurrent pregnancy loss investigations. Documentation must clearly state the balanced nature of the rearrangement or the presence of a structural marker.

• Do not use this code for unbalanced rearrangements, which typically result in phenotypic abnormalities and have more specific codes.
• Ensure the genetic report explicitly states "balanced" or describes a structural marker without significant gain/loss.
• Consider sequencing with codes for associated clinical conditions or reasons for testing, if applicable.