Extending ember data fields possible?

So lets say I have something like (in model):

export default DS.Model.extend({
  ...
  status: attr('string'),
});

API returns following values for status: pending, delivered, completed. In the Ember app, if status == delivered. The value should instead be rendered as arrived.

Which means, in the model, I have a CP:

refinedStatus: Ember.computed('status', {
  get() {
    if (this.get('status') == 'delivered') {
      return 'arrived';
    }

    else {
      return this.get('status');
    }
  }
}),

I also dont like the fact, that I need to create a new CP called refinedStatus, which literally does the same thing, but only having one condition.

Is there a cleaner approach?