Medical billing guides and checklists for hospitals and ER groups
These guides each take one billing decision and walk through it from the first step to the numbers. They are written for hospital CFOs, revenue cycle leaders and ER group owners, and every rule they use is tied to an official source.
Written by Salman Saeed, CEO and Co-Founder · Reviewed by a Certified Medical Coder · Last reviewed October 2026
No Surprises Act and out-of-network
Emergency and urgent care
Hospital and facility billing
Revenue cycle and KPIs
Choosing and changing a billing partner
Compliance, contracts and setup
Which billing guide should I read first?
Start with the guide that matches the decision in front of you, not the one with the broadest title. The table maps the role and the question to one guide, and each guide links onward to the others it depends on.
| Reader | Question | Start with |
|---|---|---|
| Hospital CFO | How does the whole revenue cycle fit together, and which number tells me a stage is working? | Hospital revenue cycle: six stages, start to cash |
| Hospital CFO | Should we bring billing in-house or outsource it, and is outsourcing safe? | In-house vs outsourced billing costs and Is it safe to outsource medical billing? |
| Hospital CFO | What do we do when a Medicare reviewer asks us for records? | Hospital billing audit readiness |
| ER group owner | Which of our claims does the No Surprises Act cover, and what is the calendar? | No Surprises Act for ER groups |
| ER group owner | Should we sign payer contracts or stay out of network? | Out-of-network vs in-network strategy for ER groups |
| Revenue cycle director | Where are our ER claims being underpaid, and how do we dispute them? | ER underpayment recovery |
| Billing manager | How do we cut the denials that start at registration? | Front-end denial prevention |
Every guide in the library is listed above by group. The No Surprises Act and out-of-network group is where most ER owners should begin. The guide to switching billing companies and the contract checklist are meant to be read together if you are changing vendors.
How do the guides relate to the rules, codes, payers and glossary?
A guide explains a decision in order, and the libraries hold the detail it points to. When a guide says a claim needs a modifier or a filing limit applies, it links to the page that gives the code or the rule in full.
- The rules library holds one page per billing rule, such as filing limits and the two-midnight rule.
- The code library holds CPT, HCPCS, revenue code and denial code pages.
- The payer guides show how each major payer pays and denies.
- The glossary defines the terms the guides use, for example IDR and UB-04.
The No Surprises Act guides also pair with the NSA deadline calculator, which turns the calendar in the guide into dates for a specific claim.
How do we source and review the guides?
Each guide takes its rules, deadlines and fees from official sources such as CMS, the eCFR and the Federal Register, listed at the bottom of the page. Examples in the guides use obviously made-up numbers and are labelled as examples.
A guide shows its last-reviewed date and a reviewer line. Our editorial policy explains how a page is researched, checked and corrected. The guides explain rules in general and are not legal advice, so check your own payer contract and counsel before you act on one. To talk through your facility, book a call.
Common questions
Straight answers from the team that does the work.
Ask a billing lead directly. A 20-minute call, Monday to Friday, 9am to 5pm Eastern.
01Which guide should a hospital CFO read first?
A hospital CFO should start with the six-stage hospital revenue cycle guide, which covers eligibility, coding, claim, denials, payment and A/R and patients, with the rules, forms and KPIs for each. Then read the medical billing KPIs guide for the eight numbers a CFO reviews, and the cost model if you are comparing in-house and outsourced billing.
02Which guide should an ER group owner read first?
An ER group owner should start with the No Surprises Act guide for ER groups, which shows which claims the Act covers, the calendar every claim runs on and who should do the work. Next read the out-of-network strategy guide, then the ER underpayment recovery playbook to find and dispute underpaid claims in your remits.
03Where can I find a medical billing checklist to download?
The billing company contract checklist guide ends with a printable checklist of the terms to settle before you sign, and the CFO safety guide gives a checklist for testing an outsourcing arrangement. Other guides carry their own checklists and scorecards, such as the RFP scorecard in the guide to choosing a billing partner.
04Are the guides updated when rules change?
Yes. Each guide shows a last-reviewed date, which is the day someone last checked it against its official sources. When a source changes, such as a Federal Register rule or a CMS manual update, the affected guides are re-checked and re-dated. If a date looks old, confirm the numbers at the source linked on the page.
05Who writes and reviews the guides?
Guides are written by Salman Saeed, CEO and Co-Founder of Nucleus Align. Each carries a reviewer line reading Reviewed by a Certified Medical Coder, a last-reviewed date and a list of sources. Automated checks also look for banned claims and deleted codes before a guide is published. Our editorial policy page describes each step.
06Can I get a guide tailored to my facility?
The guides are written in general terms, so they do not reflect your payer contracts, EHR or state. To apply one to your own facility, book a call with our team. We can walk through your remits, your denial reasons and your No Surprises Act claims against the relevant guide.
Not sure which guide fits your decision?
Book a call and a billing lead will point you to the right one.