Q99.9 is the ICD-10 code for Chromosomal abnormality, unspecified. It is a four-character subcategory of Q99 (Other chromosome abnormalities, not elsewhere classified), the most specific level in the WHO edition. It belongs to the block Q90–Q99 (Chromosomal abnormalities, not elsewhere classified) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.
- Code type
- Subcategory (4 characters)
- Chapter
- XVII · Q00–Q99
- Classification
- WHO ICD-10, 2019 version
Q99.9 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
Q99.9Uspesifisert kromosomavvik
DQ999Kromosomanomali UNS
Q99.9Määrittämätön kromosomipoikkeavuus
Q99.9Chromosomenanomalie, nicht näher bezeichnet
Q99.9Anomalie chromosomique, sans précision
Q99.9chromosoomafwijking, niet-gespecificeerd
Q99.9Chromosomal abnormality, unspecified
Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.
Look up another code
Stop looking codes up by hand
Docdemic listens to the consultation, writes the note and suggests the diagnosis and procedure codes that fit it, each one checked against your country’s official code list.
Try Docdemic free