O21.1 is the ICD-10 code for Hyperemesis gravidarum with metabolic disturbance. It is a four-character subcategory of O21 (Excessive vomiting in pregnancy), the most specific level in the WHO edition. It belongs to the block O20–O29 (Other maternal disorders predominantly related to pregnancy) in Chapter XV, Pregnancy, childbirth and the puerperium.
- Code type
- Subcategory (4 characters)
- Chapter
- XV · O00–O99
- Classification
- WHO ICD-10, 2019 version
What O21.1 includes
Conditions and terms that are coded here.
- Hyperemesis gravidarum, starting before the end of the 22nd week of gestation, with metabolic disturbance such as:
- carbohydrate depletion
- dehydration
- electrolyte imbalance
O21.1 in national editions
Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.
O21.1Svangerskapsbrekninger med metabolsk forstyrrelse
DO211Svære graviditetsopkastninger med metaboliske forstyrrelser
O21.1Raskausoksentelu ja aineenvaihduntahäiriö
O21.1Hyperemesis gravidarum mit Stoffwechselstörung
O21.1Hyperémèse gravidique avec troubles métaboliques
O21.1hyperemesis gravidarum met stofwisselingsstoornis
O21.1Hyperemesis gravidarum with metabolic disturbance
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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