World Health Organization · 2026-01 · English
Chromosomal anomalies, excluding gene mutations
Official WHO ICD-11 MMS tabulation. This international classification is separate from US ICD-10-CM. For complete instructions and postcoordination, consult the WHO browser.
More specific codes
20Sex chromosome anomaliesLD40Complete trisomies of the autosomesLD41Duplications of the autosomesLD42PolyploidiesLD43Complete monosomies of the autosomesLD44Deletions of the autosomesLD45Uniparental disomiesLD46Imprinting errorsLD47Balanced rearrangements or structural rearrangementsLD7YOther specified chromosomal anomalies, excluding gene mutationsLD7ZChromosomal anomalies, excluding gene mutations, unspecified© World Health Organization · CC BY-ND 3.0 IGO