Medical coding and billing is a complicated field, if you're not properly trained and educated as to what you're doing. However, there are also hundreds of work at home medical coding jobs out there that need filled. You can be properly trained in a very short amount of time, either by getting hired with a company willing to train you, or by taking classes through a community college or online program.
Work at home medical coding jobs are very technical positions, and aren't really as easy as some spam emails and work at home sites make them out to be. The ads don't lie; you can make decent money with work at home medical coding jobs, but it isn't just a matter of filling out forms or data entry. You have to know the different terms, definitions, and technicalities involved in medical coding in order to succeed.
Most medical coding training can be done through a community college or online degree program, and usually takes less than a year to complete. Although it is generally a certificate program, you can go on to get higher degrees in the field if you desire. This might help your odds of finding good work at home medical coding jobs.
Next time you see a spam email telling you how you can make hundreds of dollars just typing away in medical coding and billing jobs, don't waste your time with it. If you are truly qualified for work at home medical coding jobs, there are plenty of legitimate online job boards where you can find work. You don't need to waste time signing up with some company that claims to have "secret job listings" or "special jobs for members only". If a company has a job opening, they'll generally list it on a public job board for you to find.
If you don't have the proper training, but want to get into this field, check into companies that might offer to train you as a part of your hiring. There are some out there willing to do this, and it can save you the time and money of taking classes.