How to Pick the Right ED E/M Level, 99281 to 99285

What Sets the ED Level: Decision Making, History and Exam, or Time?

Medical decision making sets it, and nothing else. Since January 1, 2023, the five ED codes, 99281 to 99285, are chosen from the MDM the clinician documented. History and exam must be medically appropriate, but they do not move the level, and time is not used for ED visit levels.

CMS says the same in Medicare Claims Processing Manual chapter 12, section 30.6.1: for ED visits and critical care the CPT codes allow only MDM or only time, and for ED visits that means MDM. The same section adds that it is not medically necessary to bill a higher level when a lower one fits, and that the volume of documentation should not be the main influence on the level.

The ED coding and documentation guide covers the wider ED rules. This post is the order of work: what to look at first and where charts lose points. The tier definitions themselves sit in the AMA's CPT book, which CMS says governs ED MDM.

How Do You Score an ED Visit, Step by Step?

Why Do ED Charts End up at a Lower Level Than the Work Done?

• The note lists the diagnosis but not the dangerous conditions that were considered, so a reviewer scores a simple problem.
• Tests are named but not tied to a conclusion, so the reviewer cannot tell what was reviewed.
• The independent history, the clinician's own read of a tracing, or a consultant discussion happened but was not written down.
• The decision not to admit, or not to order a test, is left unwritten.
• Auto-imported history fills the note while the thinking is missing. CMS says the volume of documentation should not be the main influence on the level.

Going the other way, Medicare section 30.6.11 says a lower ED level would normally be reported for a nonemergency condition, so do not level up because the patient came to the ED.

What Should the Note Say so the Level Holds Up?

• The presenting problem and what was ruled out, in words a reviewer can score.
• Each unique test, who ordered it, and what you concluded from it.
• Your own interpretation of a tracing or image, if you are not billing it.
• Who gave an independent history and why it was needed.
• Outside records by source, and consultant discussions by name and outcome.
• The disposition decision and the reason, including admission considered and rejected.

Only clinically relevant history belongs in the note, since history and exam do not set the ED level.

What Do You Do When a Payer Downcodes the Visit?

Read the remittance for CARC 150, which X12 words as the payer deeming that the information submitted does not support this level of service. Pull the chart and answer it element by element: the problem and what was ruled out, each test and who reviewed it, the discussion, the disposition decision.

Medicare gives 120 calendar days from receipt of the initial determination to request a redetermination under 42 CFR 405.942, and receipt is presumed 5 calendar days after the notice date. For other payers, use the window in the denial notice and the payer's manual.

Facility and professional levels are separate. A payer reading the hospital's level does not set yours; see how hospitals set facility levels. If the same patient later needed critical care, see billing 99285 and 99291 on the same day. Procedures on the same visit bring in modifier 25 and NCCI edits.

How Does Nucleus Align Level ED Visits?

Our medical coding team includes AAPC and AHIMA certified coders who level ED visits from the chart, and we send claims within 24 hours of charge entry and work denials within 48 hours. The emergency medicine billing page shows the rest of the ER workflow. To see where your charts lose levels, book a call.