ER visit · CPT 99285

What is CPT code 99285?

Emergency department visit, highest level (level 5 of 5).

By Justin Feldstein · Reviewed 2026-06-15

What it covers

This is the top tier on the emergency department's five-level scale, reserved for the most complex visits involving high-complexity, high-risk medical decision-making. It signals a serious or potentially life-threatening situation where the team had to make urgent, high-stakes calls, such as a possible heart attack, stroke, major trauma, severe difficulty breathing, or a condition that could deteriorate quickly. Because it's the highest level, it carries the largest visit charge of the five.

When you'd see it

You'll see this after an ER visit for something acute and serious, often one that involved intensive monitoring, multiple tests, specialist involvement, or a decision about admitting you to the hospital.

Roughly what it costs

$900–$4000 commonly billed

A ballpark on the billed amount. After insurance or a negotiated rate, what you owe is often far lower. Always compare against your Explanation of Benefits (EOB).

What's usually billed with it

This level brings a hospital facility fee and a separate physician fee, and the most expensive items on the bill are often the surrounding charges, like CT or MRI imaging, extensive lab panels, IV medications, and any procedures done in the room.

99285 vs 99284

Level 4 is one step down for moderate-complexity visits, so since level 5 is the top of the scale and the costliest, it's worth confirming the documentation truly supports the highest tier. See 99284 (ER level 4).

What to watch for

Because 99285 is the most expensive visit level, ask the billing office to point to the high-complexity decision-making that justifies it, and request an itemized bill so you can see the facility fee, the physician fee, and every test as distinct lines.

Specific things to question

• Billed at the highest level when the visit, in hindsight, didn't involve high-risk or high-complexity decision-making.
• A facility fee coded at level 5 paired with a physician fee at a lower level (or vice versa) without explanation.
• Surrounding imaging and lab charges that appear duplicated or unbundled on top of the visit.

How to check this charge on your own bill

Find 99285 on your itemized bill and match it against your EOB. Confirm it appears only once, that any bundled services aren't also billed separately, and that the amount matches what your insurer says it allowed. If something doesn't line up, that's a fair question for the billing office.