Q21.3 is the ICD-10 code for Tetralogy of Fallot. It is a four-character subcategory of Q21 (Congenital malformations of cardiac septa), the most specific level in the WHO edition. It belongs to the block Q20–Q28 (Congenital malformations of the circulatory system) in Chapter XVII, Congenital malformations, deformations and chromosomal abnormalities.
- Code type
- Subcategory (4 characters)
- Chapter
- XVII · Q00–Q99
- Classification
- WHO ICD-10, 2019 version
Coding notes
- Ventricular septal defect with pulmonary stenosis or atresia, dextroposition of aorta and hypertrophy of right ventricle.
Q21.3 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
Q21.3Fallots tetrad
Q21.3Fallots tetrade
DQ213Steno-Fallots tetralogi
- DQ213ASteno-Fallots tetralogi med pulmonalklapatresi
Listed through more specific codes:
- Q21.30Fallot'n tetralogia
- Q21.31Fallot'n tetralogia ja molempien valtavaltimoiden lähtö oikeasta kammiosta
- Q21.32Pulmonaaliatresia yhdistyneenä Fallot'n tyyppiseen kammioväliseinäaukkoon
- Q21.33Fallot'n pentalogia
Q21.3Fallot-Tetralogie
Q21.3Tétralogie de Fallot
Q21.3tetralogie van Fallot
Q21.3Tetralogy of Fallot
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.
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