I think "healthy carbs" might be a bit too vague. There are simple and complex carbohydrates, and the latter can be further broken down between starchy carbohydrates like grains and fibrous carbohydrates like vegetables. There is nothing inherently unhealthy about any of these types of carbohydrates: simple carbs (e.g. fructose) are in fruit, complex carbs in whole grains, etc. I think it is probably more helpful to avoid processed foods rather than to try and label carbohydrates themselves as healthy or unhealthy.