"urgent appointment" is a correct and usable expression in written English.
You can use it when you need to refer to an appointment that needs to be made as soon as possible. For example, "I need to schedule an urgent appointment with my doctor."
Every two hours, I have an urgent appointment en suite.
"It's a long story," she told me cheerfully, as she hurried off to an urgent appointment.
She banished electronic devices from her bedroom and "treated bedtime like it was an urgent appointment".
This is the urgent appointment of the day, for whom other patients were hastily shuffled to make room.
Any of them – but perhaps, particularly, the last – might strike this enlightened royal and his wife as a good reason to remember an urgent appointment with a plant.
The New Yorker, May 15 , 1989P. 42 I'm hurrying to an urgent appointment: View Article By Rivka Galchen By Malcolm Gladwell By David Remnick By Jia Tolentino.
"Design is getting domesticated," said Mr. Moss as he leapt into a hired car gripping a scrawled list of urgent appointments.
We have also sought to identify the risk factors for endometrial cancer to help setting criteria that can be used to prioritise urgent appointments, refine subsequent management strategies.
Crazy Taxi (1999) put me behind the wheel of a low-slung cab, streaking through major cities to deliver passengers to their implausibly urgent appointments at Pizza Hut or Tower Records.
This includes expanding our in-house counselling service, with the addition of two new members of staff, to ensure that those who need urgent appointments can be seen very quickly".
For instance, Healthgrades asks reviewers to consider eight criteria, including the ease of scheduling urgent appointments, office comfort, staff friendliness, wait time and whether the doctor spent "an appropriate amount of time" with the patient.
