Days Supply Question: Do we always round down when after figuring the Days Supply, the answer includes a fraction?

Yes, Always Round Down When Figuring Days Supply and There is a Fraction

Yes, Always Round Down When Figuring Days Supply and There is a Fraction

When the days supply is calculated and the answer is a fraction do I always round down?

Example SIG: Take 1-2 tabs by mouth every 4-6 hours as needed for pain #20

Comments for Days Supply Question: Do we always round down when after figuring the Days Supply, the answer includes a fraction?

Average Rating starstarstarstarstar

Click here to add your own comments

Jul 31, 2017
Yes, Round Down
by: David

Yes, absolutely. You always round down when there is a fraction when you are figuring Days Supply.

Why? Because you always want to tell the patients' insurance company the exact amount of time the prescription will last (based on the quantity and the directions) but not longer.

In this example, with the medicine for pain, the sig/directions are:

"1-2 tablets po every 4-6 hours for pain." #20 pills

We figure the maximum amount of tablets that can be taken in one day and divide that into the quantity.

So, the maximum is 2 tablets every 4 hours. There are 6-four hour segments in 24 hours. Therefore, we multiply 2 tablets times 6 and come up with 12 tablets max in one day.

So now, we have 20 tablets. We divide 12 into 20 and come up with 1.6666 and because the remaining 8 tablets (20-12=8) will not last the patient another full day given at the maximum possible amount (based on the directions and the quantity left), we would then round down.

The reason we round down, for example, is due to the fact that if the doctor writes another prescription for the patient, for the same drug and same directions, but for a higher quantity, the insurance company already has the first prescription on record. Usually the first prescription needs to be used up at least 3/4 of the way before a new prescription or refill will be able to be run thru the insurance.

If the days supply is not calculated correctly it could delay the filling of the next prescription.

This will cause problems.

The customer may be frustrated, because they need their medicine and may have run out.

This can lead to negative health outcomes and a delay of treating the medical problem / illness / issue.

Click here to add your own comments

Join in and write your own page! It's easy to do. How? Simply click here to return to Days Supply Questions.

Back to Home

[?]Subscribe To This Site
  • follow us in feedly
  • Add to My Yahoo!

Didn't find what you were looking for? Use the box below to search this entire site.

Custom Search

Recent Articles

  1. What is day supply take 1 tab on tues and thurs with 30 tabs

    Dec 04, 18 09:06 PM

    What is day supply if I take 1 tablet on Tuesday and Thursday with a quantity of 30 tabs?

    Read More

  2. DUR Rejection Codes

    Nov 27, 18 11:16 PM

    DUR Rejection Codes - Conflict Codes, Professional Service Codes, Result of Service Code, & Level of Effort Field

    Read More

  3. How Does Nalexone Nasal Spray Help an Overdose Victim?

    Nov 23, 18 08:43 PM

    This page discusses, "How Does Nalexone Nasal Spray Help an Overdose Victim?"

    Read More

  4. Medicare Part D

    Jul 31, 18 10:26 PM

    This page answers questions about Medicare Part D, the prescription drug benefit offered by Medicare. Topics include: Who is eligible? What are some of the Costs? Factors to Consider when choosing a p…

    Read More

  5. What are some strategies the FDA has implemented, which help prevent medication errors in the pharmacy?

    Jul 29, 18 06:23 PM

    It seems like some of the errors that have been recently made by our pharmacy techs are actually really preventable. Does the FDA do anything about

    Read More

  6. Osmolarity/Hospital Potassium Infusion problem (3 Part Question)

    Jul 29, 18 05:24 PM

    At 3:00 P.M., a pharmacist received an order to add 30 mEq/L of potassium chloride to the already running intravenous fluid for a patient. After checking

    Read More


    Jul 29, 18 05:12 PM

    My pharmacy tells me I can get it 3 days early but then they wont fill it but 2 days early. Is the law on Xanax 2 or 3 days ?

    Read More

  8. pharmacy technician exam

    Jul 13, 18 10:36 PM

    I am looking for a tutor to help me prepare for the pharmacy technician certification exam. I live in area code 85373. Can anyone recommend a tutor?

    Read More

  9. Bromfenac(bromday) 0.09% When can I get a refill?

    Jul 13, 18 10:25 PM

    I am to instill 3 drops into both eyes 3 times a day. Received prescription, of 3 bottles/vials, on 16 Mar 18 and need to know how to figure how long

    Read More

  10. Is Publicly mentioning the name of the drug the patient is on a HIPPA violation?

    Jul 13, 18 10:17 PM

    If the name of the drug is mentioned in order to further assist the patient with getting them the medication, is this a violation of hipaa?

    Read More

  11. What is a "Root Cause Analysis"? And how does a pharmacy create "healthy safety culture"?

    Jul 13, 18 09:56 PM

    Recently there was a wrong-drug mistake at the pharmacy I'm employed at as a technician. One of my tech friends (who works at a different pharmacy) asked

    Read More

  12. What is the Correct Dosage for Protamine Sulfate After Receiving 3,000 units of Heparin?

    Jun 28, 18 11:01 PM

    The intern sent the following orders down: Mr. Brown, 50 mg protamine sulfate STAT. You check Mr. Brown’s chart, and he received 3,000 units of heparin.

    Read More

  13. Prior Authorization Rejection

    Apr 10, 18 11:13 PM

    This page covers what a Prior Authorization is and why it happens.

    Read More

  14. My 10 yr olds prescription -- Is The Following Situation a HIPPA Violation?

    Apr 10, 18 10:00 PM

    I know someone who is a pharmacy tech. My 10yr.olds medication was called into the pharmacy she works at. Her daughter and my daughters have an on-off

    Read More

  15. My Pharmacy told my mom that I didn't pick up my meds. Is this a Hippa Violation?

    Apr 10, 18 09:26 PM

    My pharmacy told my mom I didn't pick up my meds. Yes, I do have same last name but I have a different address; for all they know, that wasn't my mom.

    Read More