CMS Pub. 100-04, ch. 29, § 310.2

A party must file a redetermination request within 120 days of the date of receipt of the notice of initial

determination (MSN or RA) with the contractor indicated on the notice of initial determination (receipt of

the notice of initial determination is presumed to be 5 days after the date of the MSN or RA unless there is

evidence to the contrary). The date of filing for requests filed in writing is defined as the date received by

the appropriate contractor in the corporate mailroom, the date received via facsimile, or the date received in

the secure Internet portal/application, as evidenced by the receiving office’s date stamp on the request. If

the party has filed the request in person with the contractor, the filing date is the date of filing at such office,

as evidenced by the receiving office’s date stamp on the request. If the party has mailed or filed in person

the request for redetermination to a CMS, SSA, RRB office, or another contractor or Government agency

within the time limit, and the request did not reach the appropriate contractor until after the time period to

file a request expired, the contractor shall consider the date the request was first filed with a contractor or an

official Federal government entity as the date of receipt for purposes of determining if the redetermination

request was filed in a timely manner.

When the filing deadline for a redetermination ends on a Saturday, Sunday, legal holiday, or any other

nonwork day, the contractor shall apply a rollover period that extends the filing deadline to the first working

day after the Saturday, Sunday, legal holiday, or other nonwork day. For example, if the filing deadline for

a redetermination falls on the Saturday before Columbus Day, the filing deadline is extended to the first

working day after the Columbus Day holiday.

The contractor may extend the period for filing if it finds the party had good cause for not requesting the

redetermination timely. (See §240.2 for a discussion of good cause.) In order for good cause to be

considered, the appeal request must be in writing, received via hard copy mail, through a facsimile, or

through a secure Internet portal/application. If the contractor finds that the party did not have good cause for

failing to request a redetermination in a timely manner, it may, at its discretion, consider reopening. (See

Pub. 100-04, chapter 34.)