CMS-40B PDF Template

CMS-40B PDF Template

The CMS-40B form is used by individuals to apply for Medicare Part B coverage. This form is essential for those who wish to enroll in the program or make changes to their existing coverage. To get started on your application, click the button below.

Article Guide

The CMS-40B form plays a crucial role in the healthcare landscape, particularly for individuals seeking to enroll in or make changes to their Medicare coverage. This form is primarily used by those who wish to apply for Medicare Part B, which covers essential medical services such as doctor visits, outpatient care, and preventive services. Completing the CMS-40B form accurately is vital, as it helps ensure that applicants receive the benefits they are entitled to without unnecessary delays. Additionally, the form allows for updates to existing coverage, catering to changes in personal circumstances, such as a change in residency or health status. Understanding the requirements and the information needed to fill out the CMS-40B can empower individuals to navigate the Medicare enrollment process with confidence. Whether you are a first-time applicant or looking to adjust your current plan, grasping the nuances of this form is an important step in securing your healthcare needs.

CMS-40B Preview

CMS-40B (07/2025)
Request for Enrollment in Medicare Part B
(Medical Insurance)
Use this form if you already have Medicare Part A and want to sign up for Part B (Medical Insurance). You
can use this form to sign up for Part B during these times:
During your Initial Enrollment Period
During the General Enrollment Period from January 1–March 31 each year
If you’re eligible for a Special Enrollment Period
If you don’t have Part A, don’t complete this application. Contact Social Security to apply for
Medicare for the first time.
Visit Medicare.gov/basics/get-started-with-medicare to learn more about when you can sign up for
Medicare, when your coverage can start, and special situations for people under 65 with a disability.
Submit your form by mail or fax
Mail or fax your completed, signed form to your local Social Security office. Find an office near you at
SSA.gov/locator.
Get help with this form
Phone: Call Social Security at 1-800-772-1213. TTY users call 1-800-325-0778.
En Español: Llame a SSA gratis al 1-800-772-1213 y oprima el 2 si desea el servicio en Español y espere a
que le atienda un agente.
For an office near you visit SSA.gov/locator.
State Health Insurance Assistance Program (SHIP): Visit shiphelp.org to get free, personalized, and
unbiased health insurance counseling from your local SHIP.
Get information in another format
You have the right to get Medicare information in an accessible format, like large print, braille, or
audio. You also have the right to file a complaint if you feel you’ve been discriminated against. Visit
Medicare.gov/about-us/accessibility-nondiscrimination-notice, or call 1-800-MEDICARE (1-800-633-4227)
for more information. TTY users can call 1-877-486-2048.
1
CMS-40B (07/2025)
Request for Enrollment in Medicare Part B (Medical Insurance)
Section 1: Basic information
1. Medicare Number
2. First name Middle name Last name Suffix
3. Mailing address (number and street, P.O. Box, or route)
City State
ZIP code
4. Phone number 5. Email address
U.S. Department of Health and Human Services
Centers for Medicare & Medicaid Services
Form Approved
OMB No. 0938-1230
Expires: 07/31/2028
Section 2: Enrollment in Medicare Part B
1. Do you have (or did you have) coverage through an employer or union group health plan
since you turned 65? (If yes, complete item 3.) .........................................................................................................
Yes 
No
Note: If you sign up for Part B, you must pay premiums for every month you have the coverage.
2. Are you currently (or were you) an international volunteer for a non-profit organization that
provided health coverage to you? (If yes, complete item 3.) .................................................................................
Yes 
No
3. Enter dates of employment (or volunteer work) and health coverage (enter dates as mm/yyyy). Attach a
separate sheet if you need more space. Have your employer fill out the form CMS-L564 (Request for Employment
Information) and return it with your application.
Dates you (or your spouse) worked for an employer that provided health coverage
Start date:
  
End date:
Not ended
Dates you worked as a volunteer outside the U.S.
Start date:
  
End date:
Not ended
Dates of health coverage from employer (or non-profit organization)
Start date:
  
End date:
Not ended
4. Has an employer, health insurance provider, or other entity asked or required you to enroll in Part B?
(If yes, explain how and why in the space below, and include proof or documentation
with this form.) ..........................................................................................................................................................................
Yes  No
Choose your coverage start date
If you’re enrolling in Medicare while you’re still covered by a group health plan based on current employment
(or during the first full month you’re not enrolled in the group health plan), you can choose when your Medicare
coverage will start. Choose one:
The first day of the month you enroll
The first day of any of the 3 months after you enroll. Write the month and year you want coverage to start:
(mm/yyyy)
2
CMS-40B (07/2025)
Section 3: Signature(s)
1. Signature of applicant 2. Date signed (mm/dd/yyyy)
If this form has been signed by mark (X), a witness who knows the person applying must also sign below:
3. Name of witness (first and last name)
4. Signature of witness 5. Date signed (mm/dd/yyyy)
Submit your form by mail or fax
Mail or fax your completed, signed form to your local Social Security office. Find an office near you at
SSA.gov/locator.
Paperwork Reduction Act: According to the Paperwork Reduction Act of 1995, no persons are required to respond to a collection of
information unless it displays a valid OMB control number. The valid OMB control number for this information collection is 0938-1230.
The time required to complete this information is estimated to average 15 minutes per response, including the time to review
instructions, search existing data resources, gather the data needed, and complete and review the information collection. If you have
any comments concerning the accuracy of the time estimate(s) or suggestions for improving this form, please write to: CMS, Attn: PRA
Reports Clearance Ocer, 7500 Security Boulevard, Baltimore, Maryland 21244-1850. Important: Do not send this form or any items
with your personal information (such as claims, payments, medical records, etc.) to the PRA Reports Clearance Oce. Any items we get
that aren’t about how to improve this form or its collection burden (outlined in OMB 0939-0251) will be destroyed. It will not be kept,
reviewed, or forwarded to Social Security or any other agency.
Privacy Act Statement: Sections 1837, 1838 and 1872 of the Social Security Act, as amended, allow SSA to collect this information.
Furnishing this information is voluntary. However, failing to provide all or part of the information may prevent an accurate and timely
decision on any claim filed for medical insurance and/or hospital insurance.
We will use the information you provide to determine your eligibility for benefits. We may also share the information for the following
purposes, called routine uses: 1) To Federal, State, or local agencies (or agents on their behalf) for administering income maintenance
or health maintenance programs (including programs under the Social Security Act). Such disclosure includes, but are not limited to,
release of information to: Railroad Retirement Board for administering provision of the Railroad Retirement Act relating to railroad
employment; for administering the Railroad Unemployment Insurance Act and for administering provisions of the Social Security Act
relating to railroad employment; 2) Department of Veterans Aairs for administering 38 U.S.C. 1312, and upon request, for determining
eligibility for, or amount of, veterans benefits or verifying other information with respect thereto pursuant to 38 U.S.C. 5106; 3) State
welfare departments for administering sections 205(c)(2)(B)(i)(II) and 402(a)(25) of the Social Security Act requiring information
about assigned Social Security numbers for Temporary Assistance for Needy Families (TANF) program purposes and for determining a
recipient’s eligibility under the TANF program; and 4) State agencies for administering the Medicaid program.
To contractors and other Federal agencies, as necessary, for the purpose of assisting the Social Security Administration (SSA) in the
ecient administration of its programs. We will disclose information under the routine use only in situations in which SSA may enter
into a contractual or similar agreement with a third party to assist in accomplishing an agency function relating to this system of
records.
In addition, we may share this information in accordance with the Privacy Act and other Federal laws. For example, where authorized,
we may use and disclose this information in computer matching programs, in which our records are compared with other records to
establish or verify a person’s eligibility for Federal benefit programs and for repayment of incorrect or delinquent debts under these
programs.
A list of additional routine uses is available in our Privacy Act System of Records Notice (SORN) 60-0090, entitled Master Beneficiary
Record, as published in the Federal Register (FR) on January 11, 2006, at 71 FR 1826. Additional information, and a full listing of all of our
SORNs, is available on our website at SSA.gov/privacy.
CMS will maintain records received during eligibility determinations from SSA in a CMS System of Records, the Medicare
Beneficiary Database (MBD) SORN 09-70-0536 as published in the Federal Register (FR) on February 14, 2018, at 71 FR 11420.
Additional information on CMS SORNs and permissible Routine Uses for disclosure can be located at our Privacy website
HHS.gov/foia/privacy/sorns/index.html.

File Properties

Fact Name Description
Purpose The CMS-40B form is used to apply for Medicare Part B coverage.
Eligibility Individuals aged 65 or older, or those under 65 with certain disabilities, may apply.
Filing Period The application can typically be submitted during an initial enrollment period, special enrollment period, or general enrollment period.
State-Specific Forms Some states may have additional requirements or specific forms that must be submitted alongside the CMS-40B.
Governing Laws Medicare is governed by federal laws, primarily the Social Security Act, but states may have additional regulations.
Submission Method The form can be submitted online, by mail, or in person at a local Social Security office.
Processing Time Typically, it takes about 30 days to process the CMS-40B form after submission.
Required Information Applicants must provide personal information, including Social Security number, date of birth, and address.
Assistance Individuals can seek help from Medicare representatives or local advocacy groups when filling out the form.

Instructions on Utilizing CMS-40B

Completing the CMS-40B form is an important step in the process you are undertaking. After filling it out, you will submit it to the appropriate agency for further processing. Ensure that all information is accurate and complete to avoid delays.

  1. Start by gathering all necessary information, including your personal details such as name, address, and Social Security number.
  2. Carefully read the instructions provided with the form. This will help you understand what information is required in each section.
  3. Begin filling out the form with your name. Make sure to write it exactly as it appears on your identification documents.
  4. Next, enter your mailing address. This should be where you receive your official correspondence.
  5. Provide your date of birth. Use the format specified on the form to avoid any errors.
  6. Fill in your Social Security number. Double-check this number for accuracy.
  7. Complete any additional sections that apply to you. This may include questions about your current health coverage or other relevant information.
  8. Review the entire form to ensure all fields are filled out correctly and completely.
  9. Sign and date the form where indicated. Your signature confirms that the information provided is true and accurate.
  10. Make a copy of the completed form for your records before submitting it.
  11. Submit the form according to the instructions provided, whether by mail or electronically.

Important Facts about CMS-40B

What is the CMS-40B form?

The CMS-40B form is an application used by individuals to enroll in Medicare Part B. This part of Medicare covers outpatient care, preventive services, and some home health services. Completing this form is essential for those who wish to obtain Medicare coverage for these services. It is important to submit the form during your initial enrollment period or during a special enrollment period to avoid any penalties.

Who should fill out the CMS-40B form?

Individuals who are eligible for Medicare and wish to enroll in Part B should complete the CMS-40B form. This includes people who are turning 65, as well as those under 65 who qualify due to a disability. If you have delayed enrollment due to having other health coverage, you may also need to fill out this form during a special enrollment period.

How do I submit the CMS-40B form?

You can submit the CMS-40B form in several ways. You can complete it online through the Social Security Administration's website. Alternatively, you can print the form, fill it out, and mail it to your local Social Security office. It’s advisable to keep a copy of the completed form for your records. If you need assistance, consider reaching out to a local Social Security office or a trusted advisor.

What information do I need to provide on the CMS-40B form?

When filling out the CMS-40B form, you will need to provide personal information such as your name, address, date of birth, and Social Security number. Additionally, you may need to indicate whether you have had other health coverage and provide details about that coverage. Be sure to review the form carefully to ensure all information is accurate and complete.

What happens after I submit the CMS-40B form?

After submitting the CMS-40B form, you will receive a confirmation from the Social Security Administration. They will process your application and notify you of your enrollment status. If you are approved, you will receive information regarding your Medicare Part B coverage, including your start date and any premiums that may apply. If there are any issues, the SSA will reach out for clarification or additional information.

Common mistakes

Filling out the CMS-40B form can be a straightforward process, but many individuals make common mistakes that can lead to delays or complications. Understanding these pitfalls is essential for ensuring a smooth application experience. One frequent error occurs when applicants fail to provide their Social Security number. This number is critical for identifying the individual in the Medicare system. Without it, the application may be rejected or delayed.

Another common mistake involves incorrect personal information. Applicants sometimes transpose numbers in their date of birth or provide an incorrect address. Such inaccuracies can create confusion and may require additional follow-up, which can slow down the processing of the application.

Many people also overlook the importance of signing the form. A signature is not just a formality; it signifies that the applicant agrees to the information provided. If the form is submitted without a signature, it may be returned for correction, causing unnecessary delays.

Additionally, applicants often forget to check the eligibility requirements before filling out the form. Some may assume they qualify for Medicare without reviewing the specific criteria. This oversight can lead to frustration if the application is denied due to ineligibility.

Another mistake involves not providing the necessary documentation. The CMS-40B form may require additional paperwork, such as proof of income or residency. Failing to include these documents can result in a backlog in processing the application.

Some individuals may also misinterpret the instructions on the form. The language can sometimes be confusing, leading to incorrect answers. It’s crucial to read the instructions carefully and seek clarification if needed.

Moreover, applicants sometimes neglect to keep a copy of the completed form for their records. This can be problematic if there are any questions or issues later on. Having a copy ensures that individuals can reference what they submitted.

Lastly, individuals may submit the form without double-checking for errors. A quick review can catch small mistakes that could otherwise lead to significant delays. Taking the time to proofread the form before submission can save applicants a great deal of time and hassle.

Documents used along the form

The CMS-40B form is a critical document used in the Medicare program, specifically for individuals who wish to apply for or change their Medicare Part B coverage. Alongside this form, several other documents are often required or recommended to ensure a smooth application process. Below is a list of related forms and documents that may be necessary or helpful when dealing with Medicare applications.

  • CMS-40: This form is used for initial enrollment in Medicare Part B. It collects essential information about the applicant's eligibility and personal details.
  • CMS-L564: This form serves as a request for employment information. It helps to verify whether an individual has had employer-sponsored health coverage, which can affect their Medicare enrollment period.
  • CMS-10065: This document is utilized for the Medicare Savings Program. It helps individuals apply for assistance with premiums and out-of-pocket costs associated with Medicare.
  • CMS-1490S: This is the form for requesting reimbursement for medical expenses that were paid out-of-pocket. It is essential for individuals seeking to recover costs incurred before their Medicare coverage began.
  • CMS-855I: This form is for healthcare providers who wish to enroll in Medicare. It is crucial for those who will provide services to Medicare beneficiaries.
  • CMS-40B-1: This is an accompanying document that provides additional instructions for filling out the CMS-40B form, ensuring that applicants understand the process and requirements.
  • Form SSA-44: This form is used to request a reduction in income-related monthly adjustment amounts (IRMAA) for Medicare Part B and Part D premiums, based on life-changing events.
  • Form 1095-A: This document provides information about health insurance coverage obtained through the Health Insurance Marketplace. It may be relevant for individuals transitioning to Medicare.

Having these forms and documents ready can streamline the application process for Medicare and ensure that individuals receive the benefits they are entitled to. It is advisable to review each document carefully and consult with a professional if there are any uncertainties regarding the application process.

Similar forms

The CMS-40B form is used for applying for Medicare Part B. There are several other documents that serve similar purposes in the realm of healthcare and insurance. Here’s a look at five of them:

  • CMS-1500 Form: This form is primarily used by healthcare providers to bill Medicare and other insurance companies for services provided to patients. Like the CMS-40B, it is essential for ensuring that patients receive coverage for their medical expenses.
  • Medicare Enrollment Application (CMS-855I): This document is for individual healthcare providers who wish to enroll in Medicare. Similar to the CMS-40B, it facilitates the process of obtaining coverage, but focuses more on the provider's enrollment rather than the beneficiary's.
  • Medicare Advantage Plan Enrollment Form: This form is used by individuals who want to enroll in a Medicare Advantage plan. It shares the same goal of enrollment as the CMS-40B but is specifically for those choosing a private plan instead of traditional Medicare.
  • Application for Extra Help (SSA-1020): This document helps individuals apply for financial assistance with their Medicare prescription drug costs. Like the CMS-40B, it addresses a specific need related to Medicare, focusing on affordability and access.
  • Medicare Part D Enrollment Form: This form is used for enrolling in a Medicare prescription drug plan. It serves a similar function to the CMS-40B by facilitating enrollment, but it specifically targets those seeking prescription drug coverage.

Each of these documents plays a crucial role in the healthcare system, ensuring that individuals can access the benefits they need. Understanding their similarities can help streamline the enrollment process for various Medicare-related services.

Dos and Don'ts

When filling out the CMS-40B form, there are important steps to follow to ensure accuracy and efficiency. Here’s a list of what you should and shouldn’t do:

  • Do read the instructions carefully before starting.
  • Do provide accurate personal information.
  • Do double-check your entries for any errors.
  • Do sign and date the form before submission.
  • Don't leave any required fields blank.
  • Don't use correction fluid or tape on the form.

By following these guidelines, you can help ensure that your CMS-40B form is filled out correctly and processed without unnecessary delays.

Misconceptions

The CMS-40B form is an important document related to Medicare, specifically for those looking to enroll in the Medicare program. However, there are several misconceptions surrounding this form that can lead to confusion. Here’s a breakdown of eight common misconceptions:

  • Misconception 1: The CMS-40B form is only for new enrollees.
  • Many believe that this form is solely for individuals who are enrolling in Medicare for the first time. In reality, it can also be used by those who are switching plans or making changes to their existing coverage.

  • Misconception 2: You can submit the CMS-40B form at any time.
  • While it’s true that there are specific enrollment periods, some people think they can submit the form whenever they want. It’s essential to know the designated enrollment periods to avoid delays in coverage.

  • Misconception 3: The CMS-40B form guarantees immediate coverage.
  • Filling out and submitting the form does not automatically mean that coverage will begin right away. There are processing times and eligibility checks that must occur first.

  • Misconception 4: You need to provide extensive documentation with the CMS-40B form.
  • While some information is required, it’s not as daunting as many think. Basic personal information and Medicare details are typically sufficient.

  • Misconception 5: The CMS-40B form can be submitted online.
  • Some people assume that they can fill out and submit this form online. However, it usually needs to be mailed to the appropriate Medicare office, although some parts of the process can be handled online.

  • Misconception 6: Only older adults need to worry about the CMS-40B form.
  • While Medicare primarily serves older adults, younger individuals with disabilities may also need to complete this form. Eligibility is not limited by age alone.

  • Misconception 7: The CMS-40B form is the only paperwork needed for Medicare enrollment.
  • This form is important, but it is often part of a larger set of documents required for full enrollment in Medicare. Other forms and information may also be necessary.

  • Misconception 8: You cannot change your mind after submitting the CMS-40B form.
  • People often think that once the form is submitted, their choice is final. However, there are options to change plans during designated periods, so it’s not a one-time decision.

Understanding these misconceptions can help individuals navigate the Medicare enrollment process more effectively. It’s always a good idea to consult official resources or seek assistance if you have questions about the CMS-40B form or Medicare in general.

Key takeaways

The CMS-40B form is an important document for individuals seeking to enroll in Medicare. Understanding how to fill it out correctly can streamline the enrollment process and ensure that you receive the benefits you deserve. Here are seven key takeaways to keep in mind:

  • Eligibility Requirements: Before filling out the form, confirm that you meet the eligibility criteria for Medicare. Typically, this includes being 65 years or older, or having a qualifying disability.
  • Personal Information: Provide accurate personal details such as your name, address, and Social Security number. This information is crucial for processing your application.
  • Choose Your Coverage: The CMS-40B allows you to select the type of Medicare coverage you want. Be sure to understand the differences between Medicare Part A, Part B, and any other options available.
  • Review Before Submitting: Double-check all entries on the form. Mistakes can lead to delays in your enrollment or even denial of coverage.
  • Submission Methods: You can submit the CMS-40B form online, by mail, or in person at your local Social Security office. Choose the method that is most convenient for you.
  • Keep Copies: Always keep a copy of the completed form for your records. This can be helpful if you need to follow up on your application.
  • Follow Up: After submission, monitor your application status. If you don’t receive confirmation within a reasonable time frame, reach out to the appropriate agency for updates.