#IamaPreexistingCondition trends on Twitter after House passes health care bill

At least 146,000 tweets have been posted under the hashtag.

The hashtag started to trend hours after Republicans in the House narrowly pushed through the American Health Care Act, which would drastically remake health care in the U.S.

By midday Friday ET, it had trended worldwide with about 146,000 tweets so far.

Some celebrities joined in.

To illustrate concerns over the bill, Twitter users shared pictures of themselves or family members naming their medical conditions.

ABC News' Caterina Andreano contributed to this story.