Medicare observation status

Sometimes a hospital formally admits a patient as an inpatient and then changes the patient’s status to an outpatient receiving observation services. Medicare now gives some patients a right to appeal that change. The right is narrow, the clock is short, and it works only while you are still in the hospital. The reference page for Original Medicare is Original Medicare (Parts A and B).

If this is happening now, read “What to do” first.

What this means

There are three different situations. Only the first has an appeal right.

1. You were formally admitted as an inpatient, then reclassified as an outpatient under observation. You can appeal the change if either of these is true:
   • you did not have Medicare Part B at the time; or
   • you stayed in the hospital for 3 or more days in a row but were an inpatient for fewer than 3 of those days.
2. You were never formally admitted. You were an outpatient under observation from the start. These rules give no appeal right. The hospital must still give you a Medicare Outpatient Observation Notice (Form CMS-10611).
3. Your stay ended long ago. A one-time window to appeal old stays closed on 2 January 2026 (see below).

The rules in this guide are written for Original Medicare. This site has not separately confirmed how they apply if you have a Medicare Advantage plan. Ask your plan and 1-800-MEDICARE (1-800-633-4227).

This guide does not explain how your status changes what you owe. For that, ask the hospital’s patient advocate or a State Health Insurance Assistance Program (SHIP) counselor.

What to do

1. Look for the notice (you). The hospital must give you the Medicare Change of Status Notice (Form CMS-10868) as soon as possible after the change. It must reach you no later than 4 hours before you are released. This site has not confirmed the date hospitals began issuing it.
2. Ask the reviewer before you leave (you). Contact the Beneficiary and Family Centered Care Quality Improvement Organization (BFCC-QIO), the Medicare quality reviewer. Check the notice for the reviewer’s number. If it is not there, Medicare fast appeals shows how to look it up. You must ask before release from the hospital.
3. Expect a quick decision (the reviewer). The reviewer decides within one calendar day of getting the records. While a timely appeal is pending, the hospital may not bill you for the disputed services.
4. If the reviewer sides with the hospital, ask for a second review (you). Ask the reviewer for a fast reconsideration by noon of the next calendar day. It is decided within 2 calendar days. After that you can go to a judge at the Office of Medicare Hearings and Appeals.
5. If you missed the window, ask anyway (you). A late request is still decided, within 2 calendar days, but without protection from billing.
6. Keep the paper (you). Keep copies of every notice and write down the date and time you called the reviewer.

Check the date and time on your notice, which controls.

What the hospital may say, and what to say back

“You were never admitted, so there is nothing to appeal.”

Ask whether you were ever formally admitted as an inpatient, and ask for the date and time of the admission order in writing. Under these rules, only a patient who was admitted and then reclassified has an appeal right.

“You were an inpatient for only one night.”

Count the days. The second condition applies if you stayed 3 or more days in a row but were an inpatient for fewer than 3.

What has closed

The appeal right described above comes from a final rule that took effect on 11 October 2024. Separately, a 365-day window let patients appeal older stays, for inpatient admissions on or after 1 January 2009. That window ended on 2 January 2026. Requests after that date are denied as untimely unless good cause is shown. Do not build a new case on that window.

The rule

A patient who was formally admitted and later reclassified as an outpatient receiving observation services may appeal if the patient had no Part B coverage at the time, or stayed 3 or more consecutive days but was an inpatient for fewer than 3 days. (Title 42 of the Code of Federal Regulations (CFR), section 405.1210(a)(3))

Watch for

• The wrong deadline. Some older pages describe only the retrospective window. The going-forward appeal is the one that matters now.
• A bill for the stay. If a Medicare Summary Notice later denies a claim from that stay, that notice has its own appeal rights. See Original Medicare: the five appeal levels.
• Waiting for the discharge papers. Ask for the review before you are released, not after.
• Unverified. This site has not opened the regulation that requires the observation notice (42 CFR 489.20(y)), so the notice requirement here rests on the Medicare notice list.

What next

• Medicare fast appeals cover discharge and ending care, which work differently.
• Original Medicare: the five appeal levels covers the ordinary appeal of a claim.
• Free Medicare counseling helps you check what you owe.