US · guidance
CMS Pub. 100-04, ch. 21, § 10.3.10
Specifications for Envelopes
The envelopes in which MSNs are mailed will be consistent in format, rather than
varying depending on which MAC is responsible for printing and mailing the MSN.
The envelopes will feature the DHHS seal, not the individual MAC logo or the CMS
logo. Content will be printed using Minion for the address and Myriad in all caps for any
additional information. Both the DHHS seal and the content will be printed in CMS blue,
or Pantone 300 U.
The MSN may be mailed in one of three sizes of envelopes: standard #10 (4.125” x 9.5˝),
half size (6” x 9˝), or full size (9” x 12”).
All MACs are encouraged to print on customized envelopes with adjusted window
position to show the recipient address of the MSN when inserted in the envelope.
Therefore, coversheets or address labels will no longer be needed for any of the envelope
sizes. (The only exception is in the case of Pay MSNs, where the check will be part of a
cover sheet containing the beneficiary’s mailing address; see the section above for check
cover-sheet instructions, and see below for specifications for the front of Pay MSN
envelopes.)
See Exhibit 2.14 for examples of the three different sizes of non-pay envelopes and the
Pay MSN envelope.
A. Front of Non-Pay MSN Envelopes
POSITION OF CONTENT
The front of the envelope contains information of a fixed size. It does not vary in overall
width or length.
The Department of Health & Human Services seal, an imported image, is located (0.375˝,
0.25˝). It measures 57 points in width and 57.5 points in height.
The text element starts (1.25˝, 0.3˝), indented 6 points from the seal. It measures 210
points in width and 75 points in height.
POSITION OF ADDRESS WINDOW
For all sizes of the envelope, the window measures 4.5 inches in width and 1.5 inches in
height with rounded corners.
On standard #10 and half-size envelopes, the window is located at (0.75˝, 2.06˝) from left
top corner. To meet USPS requirements, the window on the standard #10 envelope
should be placed 0.625” from the bottom.
[The below figure has been revised.]
On full-size envelopes, the window is located at (0.5˝, 2˝) from left top corner.
[The below figure is new.]
See Exhibit 2.14 for layout reference.
FORMATTING
[GL 7] Department of Health & Human Services seal
[TB 1.1] return address
[GR 4.1] space after
[TB 2.2] notification line (in all capital letters)
DYNAMIC RULES
n/a
CONTENT
The return mailing address listed should be the preferred mailing address of the MAC
generating the MSN. Complete content is as follows:
[GL 7]
Centers for Medicare & Medicaid Services
c/o {A/B MAC (A), (B), (HHH), or DME MAC Name}
{MAC Street Address}
{MAC City}, {ST} {ZIP+4}
OFFICIAL MEDICARE INFORMATION
B. Front of Pay MSN Envelopes
POSITION OF CONTENT
The front of the envelope contains information of a fixed size. It does not vary in overall
width or length.
The Department of Health & Human Services seal, an imported image, is located (0.375˝,
0.25˝). It measures 57 points in width and 57.5 points in height.
The address text element starts (1.25˝, 0.3˝), indented 6 points from the seal. It measures
210 points in width and 75 points in height.
The return-service text element starts (5˝, 0.5˝). It measures 191 points in width and 26
points in height.
See Exhibit 2.14 for layout reference.
[Figure 10.3.10B has been replaced with figure 10.3.10B1.]
[The below figure is new.]
POSITION OF ADDRESS WINDOW
Reference specifications on Section 10.3.10.A for window position.
FORMATTING
[GL 7] Department of Health & Human Services seal
[TB 1.1] return address
[GR 4.1] space after
[TB 2.2] notification line (in all capital letters)
[TB 2.2] important document line (in all capital letters)
NOTE: For alternate layout of the important document line, it can be below the
notification line.
DYNAMIC RULES
n/a
CONTENT
The return mailing address listed should be the preferred mailing address of the MAC
generating the MSN. Complete content is as follows:
[GL 7]
Centers for Medicare & Medicaid Services
c/o {A/B MAC (A), (B), (HHH), or DME MAC Name}
{MAC Street Address}
{MAC City}, {ST} {ZIP+4}
OFFICIAL MEDICARE INFORMATION
IMPORTANT DOCUMENT ENCLOSED
C. Back of All Envelopes
POSITION
The back of the envelope contains information of a fixed size. It does not vary in overall
width or length.
On standard #10 envelopes, the content area begins 0.375 inches from the top margin and
is centered to the width of the envelope. It is 459 points in width and 48 points in height.
The vertical position may be adjusted slightly depending on the shape and height of the
envelope flap.
On half- and full-size envelopes, the content area begins 0.5 inches from the top margin
and is centered to the width of the envelope. It is 433 points in width and 48 points in
height. The vertical position may be adjusted slightly depending on the shape and height
of the envelope flap.
See Exhibit 2.14 for layout reference.
FORMATTING
[TB 2.1] instructions, center aligned
[GR 4.1] space after
[TB 2.2] notification line, all caps, center aligned
DYNAMIC RULES
n/a
CONTENT
For help regarding your notice, call us at 1-800-MEDICARE (1-800-633-4227).
If you change your address, contact the Social Security Administration at 1-800-772-
1213.
TO BE OPENED BY ADDRESSEE ONLY
D. Envelope Liner
All Pay envelopes must have a security liner inside the envelope to ensure the inserted
check cannot be seen through. Shown below is a suggested pattern using the DHHS seal.
The artwork will be provided as GL 8 in vector and flash image formats. The MACs may
also use a standard pattern if the recommended custom pattern will be costly to
implement.
E. Coversheet
All MACs are encouraged to print on customized envelopes without coversheets.
However, if there is a need to have coversheets, the address block should follow the same
specifications to those on the MSN. See 10.3.3.C “Recipient Address” subsection for
specifications.
History
(Rev. 3210, Issued: 03-03-15, Effective: 04-16-15. Implementation: 04-16-15)
Provenance
- Source
- cms.gov
- Retrieved
- 2026-08-25
- Edition
- iom-2026-08-25
- Content hash
190e3edf92ac6f616a14075cdafc4fb49f98a7df31d5aee5ed113cd66ce33cd2
The link goes to the issuing authority’s own document — the one we read to produce this record. Where a source publishes whole titles rather than sections, your browser may need a moment to jump to the provision.
Unofficial copy of government-published law, reproduced from official sources with full provenance. Not an official publication; verify against official sources before relying on it in a filing. Records in the 'guidance' corpus, and only that corpus, are sub-regulatory (interpretive guidelines, survey procedures) and are not binding law. Validity bounds follow each jurisdiction's declared temporalBasis.