Doctor Writing controlled substanceIf your doctor cancelled a written prescription for a controlled substance (oxycodone 10/325 in this case), a pharmacy outside your usual chain (e.g. Walgreens) will not be able to tell that the prescription was cancelled as pharmacy systems don't link outside a specific chain.

This is different from an electronic prescription. If your doctor wrote your prescription electronically, which was then sent to a pharmacy, they have the capability of canceling the prescription, even after it was sent.

Since you have a written prescription, a pharmacy would have no way of knowing that it has been cancelled by the doctor. However, it is not a good idea to fill a written prescription you know your doctor cancelled as they will eventually find out that you filled it due to prescription monitoring systems that are in place in every state in the United States.

In addition, if the pharmacy calls your doctor to verify the prescription for whatever reason (such as questioning the recent fill of oxycodone you received), they are likely to be notified the prescription is cancelled.

Prescription Monitoring Programs

Doctor on computer

All 50 states have some sort of prescription drug monitoring program in place. These are referred to as either:

  • Prescription Monitoring Programs
  • Prescription Drug Monitoring Programs

With these programs, electronic databases have been created that store, among other things, the controlled substance prescription fill history of every individual in the state. Authorized health care professionals and law enforcement can access these systems, with the purpose being to reduce prescription drug abuse and diversion.

Specific laws vary by state but pharmacists and prescribers are often legally required to report controlled substances they dispense to their state monitoring program. In addition, most states require doctors writing controlled substance prescriptions to check the database before writing a prescription.

In most cases, individual patients cannot directly access the data stored in these databases but may instead be required to submit a request to the program for their information. 

Going back to your situation, if you fill your prescription for oxycodone 10/325, it will be recorded and stored in your State's database, which can (and most likely will) be accessed by your next doctor, your prior doctor and your pharmacy. It will eventually be found out that you filled the script your doctor cancelled.