Yes. To book an appointment for your child, log in to the KRY app by signing up with your own BankID and then choosing whether to book a drop-in time or time-booking. Then you get the question "for whom you want to book the time" and then you will have to choose "My Child".
Children who are 16 years old can legitimise themselves with BankID at KRY.
Children must be present during the appointment, just like any other appointment at a physical healthcare center.