K31.1 is the ICD-10 code for Adult hypertrophic pyloric stenosis. It is a four-character subcategory of K31 (Other diseases of stomach and duodenum), the most specific level in the WHO edition. It belongs to the block K20–K31 (Diseases of oesophagus, stomach and duodenum) in Chapter XI, Diseases of the digestive system.
- Code type
- Subcategory (4 characters)
- Chapter
- XI · K00–K93
- Classification
- WHO ICD-10, 2019 version
What K31.1 includes
Conditions and terms that are coded here.
- Pyloric stenosis NOS
What K31.1 excludes
Conditions that look similar but belong under another code.
- congenital or infantile pyloric stenosis Q40.0
K31.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
K31.1Hypertrofisk pylorusstenose hos voksen
DK311Hypertrofisk pylorostenose
- DK311APylorostenose UNS
K31.1Aikuisen mahanportin hypertrofinen ahtauma
K31.1Pylorusstenose beim Erwachsenen
- K31.10Hypertrophische Pylorusstenose beim Erwachsenen
- K31.11Entzündliche Pylorusstenose beim Erwachsenen
- K31.12Pylorusstenose beim Erwachsenen durch Kompression und Infiltration
- K31.18Sonstige und nicht näher bezeichnete Magenausgangsstenose beim Erwachsenen
K31.1Sténose pylorique hypertrophique de l'adulte
K31.1hypertrofische pylorusstenose bij volwassene
K31.1Adult hypertrophic pyloric stenosis
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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