LD40.0
Complete trisomy 21
Complete trisomy 21
Classification
ICD-11
Chapter
20: Developmental AnomaliesBlock
LD40-LD7ZParent Code
LD40ICD-10 Mapping
5 equivalentsWHO Foundation
View on WHOICD-10 Equivalents(5)
ICD-10 Equivalents
View full mappingCorresponding ICD-10-CM codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(13)
SNOMED CT ↗
- Complete trisomy 21 syndrome41040004
- Trisomy 21- meiotic nondisjunction205615000
- Mosaic Down syndrome205616004
- 21q partial distal trisomy227035005
- 21q partial trisomy228050004
- Unbalanced translocation and insertion254262003
- Whole chromosome trisomy meiotic nondisjunction254269007
- Whole chromosome trisomy - mitotic nondisjunction mosaicism254270008
- Translocation Down syndrome371045000
- Dementia co-occurrent and due to Down syndrome733194007
Frequently Asked Questions
What is the ICD-11 code for complete trisomy 21?
The ICD-11 code for complete trisomy 21 is LD40.0. The full clinical description is "Complete trisomy 21".
What does ICD-11 code LD40.0 mean?
ICD-11 code LD40.0 represents “Complete trisomy 21”. It is classified under Chapter 20: Developmental Anomalies.
What chapter is LD40.0 in?
LD40.0 is in Chapter 20: Developmental Anomalies (codes LA00-LD9Z).
What is the ICD-10 equivalent of ICD-11 code LD40.0?
LD40.0 maps to 5 ICD-10 codes: Q90 (Down syndrome), Q90.0 (Trisomy 21, nonmosaicism (meiotic nondisjunction)), Q90.1 (Trisomy 21, mosaicism (mitotic nondisjunction)), and 2 more. ICD-10 and ICD-11 do not always have one-to-one mappings — check the mapping type (equivalent, approximate, narrower, or broader) for each result.
What is the difference between ICD-10 and ICD-11?
ICD-11 is the latest revision of the WHO's International Classification of Diseases, succeeding ICD-10. Key differences include: a fully digital-first design, new chapters for sleep-wake disorders, sexual health, and traditional medicine, improved coding for rare diseases, and better integration with electronic health records through extension codes.
What SNOMED CT codes does LD40.0 map to?
LD40.0 maps to 10 SNOMED CT concepts: 41040004, 205615000, 254269007, 205616004, 254270008, and 5 more. SNOMED CT is a clinical terminology used in electronic health records.
What UMLS concepts map to ICD-11 code LD40.0?
LD40.0 is linked to 3 UMLS Concept Unique Identifiers: C0013080, C2910352, C1306720. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.