There are a variety of resources that you can use to locate a medical billing and coding job. Some of these include Online Searches, Job Boards and your local classifieds.
I would first recommend that you look online through a search in any of the top search engines. Looking for keywords related to "medical billing", "medical billing and coding jobs" or "local medical billing jobs" could direct you to some great sites.
In addition to this, there are job boards online that are specifically are geared toward Medical Billing & Coding jobs at home; some of them are as follows:
I can not guarantee what type of positions they have available, but certainly looking through any of them might yield some results.
Finally, you can look in your local classified ads to see if there are any medical billing & coding positions available.