Emergency Room Billing Cheat Sheet (2026)
Emergency department claims get scrutinized harder than almost any other setting. Payers down-level 99285 routinely and deny critical-care time on a technicality. Below is how the 2023 ED leveling works, what counts toward critical-care minutes, and the modifiers that keep same-visit procedures from being absorbed into the E/M.
Quick reference for emergency room billers. Last updated .
Top Emergency Room CPT Codes & 2026 Medicare Allowables
| Code | Description | Non-Facility | Facility | Total RVU |
|---|---|---|---|---|
| 99281 | Emergency department visit, minor problem | $11.02 | $11.02 | 0.33 |
| 99282 | Emergency department visit, straightforward MDM | $40.42 | $40.42 | 1.21 |
| 99283 | Emergency department visit, low MDM | $69.47 | $69.47 | 2.08 |
| 99284 | Emergency department visit, moderate MDM | $118.24 | $118.24 | 3.54 |
| 99285 | Emergency department visit, high MDM | $171.35 | $171.35 | 5.13 |
| 99291 | Critical care, first 30-74 minutes | $308.96 | $199.07 | 9.25 |
| 99292 | Critical care, each additional 30 minutes | $133.94 | $100.20 | 4.01 |
| 36556 | Central venous catheter insertion (age 5+) | $237.81 | $77.49 | 7.12 |
| 31500 | Endotracheal intubation, emergency | $132.94 | $132.94 | 3.98 |
| 92950 | Cardiopulmonary resuscitation | $379.10 | $170.34 | 11.35 |
National 2026 Medicare Physician Fee Schedule estimates (total RVU multiplied by the conversion factor). These are adjusted by state locality. See the per-state table on the Emergency Room billing services page.
Modifiers That Prevent Emergency Room Denials
A separately identifiable ED E/M on the same day as a procedure performed during the visit, such as a laceration repair or fracture care.
Distinct procedural services in the same encounter that NCCI would otherwise bundle, such as separate wound repairs at different sites.
The ED E/M that resulted in the decision for major surgery with a 90-day global.
Multiple outpatient hospital E/M encounters on the same date, on the facility side.
Drug wastage (JW for the discarded amount) or no wastage (JZ) on single-dose vials. One of the two is now required on separately payable drugs.
A repeat procedure by the same physician, such as a repeat ECG or X-ray during the same ED stay.
Top Emergency Room Denials → Quick Fix
Document high-level MDM: the number and severity of problems, the amount and complexity of data, and the risk, including the differential considered and the tests ordered, under the 2023 ED E/M rules.
Record the total critical-care minutes and the organ-system failure or high-probability-of-deterioration rationale. 99291 requires 30 to 74 minutes of direct critical care.
Append modifier 25 to the E/M and document it as separately identifiable from the procedure performed in the same encounter.
Append JW for the discarded amount or JZ for none discarded on single-dose-vial drugs. Claims without one of them are now rejected.
Bill the professional component on the CMS-1500 and the facility component on the UB-04 under the correct payer split. Do not resubmit the same component.
NCCI Bundling Watch-Outs
Code pairs from this specialty's set that carry NCCI edits. Billing both without a justified modifier triggers a bundling denial.
| Code | Bundles With | Rationale |
|---|---|---|
| 99281 | 0362T | Misuse of Column Two code with Column One code |
| 99281 | 0373T | Misuse of Column Two code with Column One code |
| 99282 | 0362T | Misuse of Column Two code with Column One code |
| 99282 | 0373T | Misuse of Column Two code with Column One code |
| 99283 | 0362T | Misuse of Column Two code with Column One code |
| 99283 | 0373T | Misuse of Column Two code with Column One code |
| 99284 | 0362T | Misuse of Column Two code with Column One code |
| 99284 | 0373T | Misuse of Column Two code with Column One code |
Documentation That Holds Up on Appeal
High-complexity MDM: the differential considered, the data reviewed and ordered, and the risk of the presenting problem, not just the final diagnosis.
Total critical-care minutes, excluding separately billable procedures, and the clinical instability addressed. 99291 is the first 30 to 74 minutes and 99292 each additional 30.
A standalone E/M note distinct from the procedure note to support modifier 25.
The indication, the technique, and that the billing provider performed it, separate from critical-care time.
The exact administered and discarded amounts to support JW or JZ and the billed units.
Revenue Emergency Room Practices Leave on the Table
Down-coding 99285 defensively when high-complexity MDM is documented. This is the single largest ED revenue leak.
Not capturing critical-care time because procedures were performed. Procedure time is separately billable on top of critical care.
Missing separately billable procedures such as laceration repair, splinting, and foreign-body removal that get folded into the E/M.
Omitting JW units and losing reimbursable drug wastage.
Emergency Room Billing FAQ
What time qualifies as critical care?
Direct, personal management of a critically ill patient with a high probability of imminent deterioration. 99291 covers the first 30 to 74 minutes. It excludes time spent on separately billable procedures, which are billed in addition.
Why do payers down-level 99285?
Because the note documents the diagnosis but not the high-complexity MDM that justified it. Record the differential, the data ordered and reviewed, and the risk. That is what supports the level under the 2023 ED E/M guidelines.
Can I bill a procedure and the ED E/M together?
Yes, with modifier 25 on the E/M and separate documentation showing the visit was a significant, separately identifiable service beyond the procedure.
Is JZ really required if nothing was wasted?
Yes. Single-dose-vial drug claims now need either JW for the discarded amount or JZ for no wastage. Missing both triggers a modifier denial.
Stop Losing Emergency Room Revenue to Preventable Denials
Our AAPC-certified emergency room coders apply every rule on this sheet to your claims. Call 888-701-6090 for a free billing assessment.