What was your ultimate solution to your chiropractic billing that did not involve hiring additional personnel?

I thought that slow payments were simply an insurance headache, but after we took a closer look at our workflow. When we were right in the middle of digging through old reports, a chiropractic billing company called our attention to patterns we had failed to notice in months, which were primarily small habits of code and follow-up holes. Repairing those did not mean major modifications, and it completely changed the cash flow rhythm. So now I am asking, what little change in billing had the biggest impact at your clinic? Would like to hear the experiences of other people with this.