It's explained in another comment. The US tracks it by asking "is this person who died, pregnant?". If the answer is yes, then it's a "maternal death".
Norway only counts pregnant women who died because of their pregnancy.
> Among the 525 pregnancy-related deaths, an underlying cause of death was identified for 511 deaths. In 2020, the six most frequent underlying causes of pregnancy-related death—mental health conditions, cardiovascular conditions, infection, hemorrhage, embolism, hypertensive disorders of pregnancy—accounted for over 82% of pregnancy-related deaths (Table 4).
> Among the 525 pregnancy-related deaths, a preventability determination was made for 515 deaths. Among these, 430 (84%) were determined to be preventable (Table 6).
This shows they didnt just take a yes\no for pregancy and +1ed the statistic, like you suggested. They reasoned about the causality and preventability.
> This shows they didnt just take a yes\no for pregancy and +1ed the statistic, like you suggested.
I didn't suggest that.
What I said was how numbers were reported. The US reports all deaths in pregnant women, regardless of cause. Norways only reports maternal deaths when the cause is pregnancy complications.
Norway only counts pregnant women who died because of their pregnancy.