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643 Excessive vomiting in pregnancy
Requires fifth digit; valid digits are in [brackets] under each code. See beginning of section 640-649 for definitions.
hyperemesis arising during pregnancy
persistent arising during pregnancy
vicious arising during pregnancy
hyperemesis gravidarum
643.0 Mild hyperemesis gravidarum
Hyperemesis gravidarum, mild or unspecified, starting before the end of the 22nd week of gestation
643.1 Hyperemesis gravidarum with metabolic disturbance
Hyperemesis gravidarum, starting before the end of the 22nd week of gestation, with metabolic disturbance, such as:
carbohydrate depletion
electrolyte imbalance
643.2 Late vomiting of pregnancy
Excessive vomiting starting after 22 completed weeks of gestation
643.8 Other vomiting complicating pregnancy
Vomiting due to organic disease or other cause, specified as complicating pregnancy, or as a reason for obstetric care during pregnancy
Use additional code to specify cause
643.9 Unspecified vomiting of pregnancy
Vomiting as a reason for care during pregnancy, length of gestation unspecified
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