Frequently Asked Questions

Answers to common questions about CDM Cases.

Unfortunately not. Once your subscription has started at the time of purchase, you cannot pause a subscription.

No. We do not wish to police this. Things happen, so we tell you before you purchase to purchase more time than you think you need in case something like this happens.

Yes, we now have the ability to select an activation date up to 90 days from the time of purchase. If this is not selected at checkout, then your subscription would begin at the time of purchase.

Yes, we have a 1 week and a 2 week subscription

The subscription starts at the time of purchase unless you selected to have your activation date in the future (up to 90 days).

Yes, we have 1 and 3 days extensions available.

Unfortunately not. We recommend in our product purchase page to purchase more time than anticipated just in case an event outside your control occurs that could cause a delay in your test. To be fair to our other customers who have purchased sufficient time, we do not make any exceptions regardless of the circumstance.

Click here to view our video on an explanation on how to properly order medications on the COMLEX Level 3 Clinical Decision Making (CDM) Cases portion of the exam.

Click here to view our video on an explanation on how to properly order medications on the COMLEX Level 3 Clinical Decision Making (CDM) Cases portion of the exam.

Our prices can be seen on our purchase page here

Our program works on all devices with a modern browser (i.e. Chrome, Safari, Firefox, Edge). It has been tested the most with chromium based browsers. Our program is compatible with Apple devices (iPad, iPhone), Chromebooks, Android devices (phones, tablets), Linux devices, Windows computers, and Mac computers.


The desktop version is compatible with Windows and Mac computers only.

No. This is a common question as many students purchase the 1 month subscription and then realize that they need more time to study and then wish to renew at a discounted rate. We do not offer discounts for renewals as this is often abused. Offering discounts to renewals creates incentives for students to renew and hand off subscriptions to other students. We'd rather not have to police this, so we do not offer any discounts for renewals.


We recommend that students purchase the 3 or 6 month subscription to avoid having to renew.

Yes, you can test 2 full cases for free. Just download the app from the “Try” Page located here. There are 2 cases that are fully functional.


The online version demo is located here: https://app.cdmcases.com

Yes, it is very similar. There are minor differences, but we have worked hard to make the experience similar to familiarize you with what will be required on test day.

No, we do not save credit card information. All of the credit card processing is handled through Stripe. We never see your credit card information, and we never store it. It is safe to use your credit card on our site.

As many times as you wish during your subscription period.

Rules for fill in the blank: (Note: This window will NOT be there on the real test, so do not depend on this as a reference):


This is not included on the real test. This is for education purposes only.

#1 - If giving a drug, give drug name, not classes (example: give hydrochlorothiazide rather than "antihypertensive").

#2 - If giving a drug, give the route of the drug : Oral (by mouth), inhalation, sublingual, intravenous, intramuscular, subcutaneous, intradermal, topical) Try not to abbreviate.

#3 - Imaging studies: Must include anatomic site (example: Chest xray instead of xray)

#4 - Avoid or limit use of abbreviations due to lack of standardization. We accept some standard abbreviations, but it would be safer to spell it out and not abbreviate on the test!

#5 - Protocols will not be accepted as correct because they are often not universal.

#6 - Urgency: Include “stat” when a procedure or diagnostic test is needed within 30 minutes, regardless of clinical setting, including the emergency department.

#7 - Referrals and consults: If the correct plan of action requires a specialty referral and/or consultation, in addition to the type of specialist you must specify the appropriate procedure or management step the specialist will perform (for example, “refer to psychiatry for cognitive-behavioral therapy”).


Note that just like in the real test, there might be 2 phrases required in a fill-in-the-blank answer. As with the example above with referral to psychiatry, the first phrase that will be matched is "psychiatry" and the second phrase that will be matched is "cognitive behavioral therapy." In the feedback section, there will be a marker "Additional phrase required" which will show you the second phrase that must be matched.


Another example of 2 phrases that must be matched is with fill in the blank medications which require the route of administration. The first phrase would be the medication such as lisinopril. The second phrase would be the route which would be oral or by mouth or PO (though try to limit abbreviation usage). The correct response would be lisinopril by mouth.

You will need to complete all of the questions prior to getting your report (unless you have checked practice mode). When you hit "exit case" this will save your work and is for convenience if you are not able to finish the case right away. Clicking "exit case" will not end the case. It means you are prematurely leaving the case, but in the online/web version, it will save your work, so you can return and start off from where you started.

  1. You go to our website here at cdmcases.com and go to 'Purchase'.
  2. Select the length of time you would like to extend.
  3. Make sure that you use the same email address as before to link the new purchase to this account.
  4. Checkout, and you can login to your account at app.cdmcases.com