# Resources, Field Notes on Medical Bills > Plain-English notes on what billing errors look like, what a fair price is, and how disputing a medical bill actually works. Resources ## Field notes on medical bills What billing errors look like, what a fair price actually is, and how a dispute really works. Everything here is what we do all day. **Teardown ยท hospital stay** Illustrative 71046 Chest X-ray, billed twice $610 Duplicate 99285 ER visit, notes support level 3 $2,730 Upcoded 80053 One panel billed as 14 tests $1,340 Unbundled R&B 4 days billed, 3 nights stayed $3,912 Overstated Taken off one bill **$14,380** Figures are illustrative. Featured teardown ### Anatomy of an overcharged hospital bill A duplicate scan, an upcoded visit, an unbundled panel, and an overstated stay. Four errors on one bill, walked through line by line. [Read the teardown](https://www.soro.health/blog-anatomy-overcharged-claim) The blog ### Our blogs 4 min read #### [Upcoding vs. unbundling: how to tell them apart](https://www.soro.health/blog-upcoding-vs-unbundling) The two most common errors, and how each shows up on your itemized bill. 4 min read #### [Medicare rates, FAIR Health, and what a fair price means](https://www.soro.health/blog-fair-price-benchmarks) The data that turns "that looks high" into a dispute. 2 min read #### [Where AI fits into a claims audit](https://www.soro.health/blog-ai-claims-review) Every claim still ends with a person's judgment. Here's the part AI actually handles. Live sessions ### Coming soon --- This is the Markdown representation of , which also serves it under `Accept: text/markdown`. Site overview for agents: .