Other microdeletions

This code signifies a chromosomal microdeletion that does not fall into a more specific category. These are small, submicroscopic deletions of genetic material from a chromosome, often leading to a range of developmental, intellectual, or physical abnormalities depending on the genes affected. The specific clinical presentation can vary widely.

Assign this code when genetic testing confirms a pathogenic or likely pathogenic microdeletion, but the deletion syndrome is not specifically classified elsewhere in the ICD-10-CM hierarchy (e.g., DiGeorge syndrome, Prader-Willi syndrome). Documentation should clearly state "microdeletion" and specify that it is "other" or "unspecified" if a more precise code is unavailable.

• Always seek documentation of the specific microdeletion syndrome if available, as more precise codes exist (e.g., Q93.5 for Cri-du-chat syndrome).
• Do not use this code for microduplications; those are classified under Q92.8.
• Sequence this code as a primary diagnosis when the microdeletion is the reason for the encounter or the underlying cause of the patient's condition.