Introducing a closed pharmaceutical formulary into California workers’ compensation could produce two main benefits. The first is to further lower the cost of pharmaceuticals by either restricting or eliminating certain medications. The second is to reduce the possibility of drug addiction.
An October 2014 California Workers’ Compensation Institute (“CWCI”) report titled, “Are Formularies a Viable Solution for Controlling Prescription Drug Utilization and Cost in California Workers’ Compensation” states that pharmaceutical costs could be reduced by 12%, or $124 million, by introducing the Texas workers’ compensation pharmaceutical formulary.
To achieve the second benefit, an assembly member introduced AB1124 to establish an evidence-based medication formulary and wrote, “The central purpose of our workers’ comp system is to ensure injured workers regain health and get back to work. When workers get addicted to dangerous medications, goals of the program are not met. An evidence-based formulary has proven to be an effective tool in other states and should be considered in California.”
To confirm whether these benefits could be achieved through the introduction of the Texas formulary, a review of the CWCI study and the opioid medications available under the Texas formulary was conducted. The findings, summarized below, suggest that the answer is no.
Although California does not restrict or limit medications in treating injured workers, it does limit the prices paid and provides an opportunity to question prescribed medications that appear to be out of the ordinary. Medi-Cal prices (California’s Medicaid health care program) are used for establishing the maximum prices for workers’ compensation medications, in contrast to states such as Texas, which use the average wholesale price (AWP).
A review of two cost-saving examples that referenced specific medications calculated projected savings based on CWCI’s ICIS payment data for prescriptions paid between Jan. 1, 2012 and June 30, 2013.
The first example compared 50mg Tramadol prices from five different suppliers. The highest was $190, followed by $23, $18, $12 and $8 per script. Here, CWCI suggested that the manufacturer of the highest-priced script be removed from the California formulary. From mid 2009 through 2013, however, the unit price for 50mg Tramadol from the supplier of brand name Ultram and at least 10 other suppliers in California was nine cents, so the AWP for a script was $2. So, overpaying for medications is an issue even if the $190 supplier is removed.
The Workers’ Compensation Research Institute (WCRI) also reported that California claims administrators paid a unit price of 35 cents for 5mg Cyclobenzaprine and 70 cents for 10mg while the unit price from Californian suppliers was 10 cents for 10mg and 15 cents for 5mg. Again, the prices suggest that California claims administrators were paying more than the maximum prices.
Based on randomly selected manufacturers and strengths of the top 20 medications identified in the 2013 NCCI prescription drug study, California’s prices were on average 20% lower than the AWP and in some cases as little as 1/24th the cost. California prices were found to be at the lowest retail price range compared with those published on goodrx.com. Pharmacies located in Los Angeles, Miami and Dallas were used for comparison. Findings suggested employers in California workers’ compensation are paying no more than the general public for medications, whereas in Texas employers are paying more by using the AWP.
The second example compared script prices of seven opioid agonists, including Tramadol and Oxymorphone. Oxymorphone was the highest-priced script at $600 and Tramadol the lowest at $60 per script, suggesting a saving of as much as $540 if Tramadol were to be prescribed instead of Oxymorphone.
But prescribing oxymorphone when tramadol could suffice or vice versa could be regarded as an act of gross negligence by the physician. On the World Health Organization (WHO) analgesic ladder, tramadol and codeine are weak opioids regarded as “step two” while acetaminophen and NSAIDs are “step one.” “Step three” opioids include medications such as morphine, oxycodone and oxymorphone, which all differ in their pharmacodynamics and pharmacokinetics, so choosing one or more to treat pain becomes a balance between possible adverse effects and the desired analgesic effect. Oxymorphone (stronger than morphine or oxycodone) is recommended for use only when a person has not responded to or cannot tolerate morphine or other analgesics to control their pain.
A list of opioid medications published by Purdue Pharma was used to identify which opioids were excluded from the Texas formulary. The list of more than 1,000 opioid analgesics was prepared by Purdue to comply with the state of Vermont law 33 V.S.A. section 2005a, requiring pharmaceutical manufacturers to provide physicians with a list of all drugs available in the same therapeutic class. Being in the same class, however, does not necessarily mean they are interchangeable or have the same efficacy or safety.
The list showed available strengths and included (1) immediate and extended release, (2) agonists such as fentanyl, oxycodone, hydrocodone, oxymorphone, tramadol, codeine, hydromorphone, methadone, morphine, tapentadol and levorphanol and (3) combinations such as acetaminophen with codeine, oxycodone with acetaminophen, oxycodone with asprin, oxycodone with ibuprofen, hydrocodone with acetaminophen, hydrocodone with ibuprofen, acetaminophen-caffeine with dihydrocodeine, aspirin-caffeine with dihydrocodeine and tramadol with acetaminophen.
It appears that extended-release medications used for around-the-clock treatment of severe chronic pain have been excluded or are not listed in the Texas formulary, with a few exceptions. For example, 80mg OxyContin (Oxycodone) ER 12 hour (AWP $18, Medi-Cal $15) is excluded. 120mg Hysingla (Hydrocodone) ER 24 hour (AWP $41, Medi-Cal $34) is not listed. However, 200mg MS Contin (Morphine) ER 12 hour (AWP $31, Medi-Cal $26) and 100mcg Fentanyl 72 hour transdermal patch in both brand name and generic forms are approved under the Texas formulary. Immediate-release generic medications such as oxycodone, hydromorphone and hydrocodone with acetaminophen in all strengths are approved, but immediate-release hydrocodone with ibuprofen and oxymorphone in either immediate or extended release are excluded.
Would the objective of AB1124 be achieved by utilizing the Texas formulary? The above review suggests it would not. All the opioid medications available through the Texas formulary have the potential to cause addiction and be abused, possibly leading to death either accidentally or intentionally. As an example, the executive director of the Medical Board of California has filed accusations against Dr. Henri Eugene Montandon for unprofessional conduct including gross negligence. His patient was found dead with three 100mcg fentanyl patches on his upper chest. The autopsy revealed he potentially had toxic levels of fentanyl, codeine and morphine in his bloodstream at time of death. These three opioids are available under the Texas formulary.
An article published on the website www.startribune.com described the challenges in treating returning soldiers from combat duty. The article discusses Zach Williams, decorated with two Purple Hearts who was found dead in his home from a fatal combination of fentanyl and venlafaxine, an antidepressant. Venlafaxine in both immediate- and extended-release form is approved in the Texas formulary. In addition, the following statement was made in a 2011 CWCI study into fentanyl: “Of the schedule II opioids included in the Institute’s study, the most potent is fentanyl, which is 75 to 100 times more powerful than oral morphine.”
The top 20 medications identified by the 2013 NCCI prescription drug study were also compared with the Texas formulary, and six medications were found to be excluded, including three extended-release opioids, OxyContin (Oxycodone), Opana ER (Oxymorphone) and the once-daily Kadian ER (Morphine). The twice-daily, extended-release morphine MS Contin, however, was approved. Flector, a non-steroidal anti-inflammatory transdermal patch used for acute pain from minor strains and sprains, was excluded, as was carisoprodol a muscle relaxant classified by the DEA as a Schedule IV medication (the same as Tramadol). The Lidocaine transdermal patch, which is a local anesthetic available in both brand name and generic. was also excluded. Lidocaine patches have been found to assist in controlling pain associated with carpal tunnel syndrome, lower back pain and sore muscles. Apart from carisoprodol, it would appear the remaining five were excluded from the Texas formulary because of their high price rather than concerns regarding their safety or potential for abuse.
The U.S. Food and Drug Administration (FDA) is responsible for the approval of all medications in the U.S. Its approved list is the U.S. pharmacy formulary (or closed formulary). California workers’ compensation uses this list for treatment and the Medi-Cal formulary for medication pricing. In comparison, Texas workers’ compensation uses its own formulary, which is a restricted list of FDA-approved medications, and pays a higher price for approved medications than California’s system does.
Implementing an evidence-based formulary, such as in Texas, may result in an injured worker’s not having the same choice of medications as a patient being treated for pain under California’s Medicaid healthcare program. How can this be morally justified? Will we see injured workers paying out-of-pocket to receive the medications necessary to control their pain?
Claims administrators can greatly reduce pharmaceutical costs through their own initiatives by (1) ensuring that they pay no more than the Department of Industrial Relations (DIR) published price for a medication, (2) ensuring that physicians within their medical provider network (MPN) treat pain using the established pharmacological frameworks such as the WHO analgesic ladder, (3) ensuring that quantities and medication strengths are monitored, along with how a person has responded to analgesics, (4) ensuring that, when controlling pain with opioids, there is a heightened awareness for potential abuse, misuse and addiction, (5) establishing a multimodal pain management regimen including non-pharmacological therapies such as acupuncture, aerobics, pilates, chiropractic and physical therapy tailored to a person’s medical condition and, (6) for chronic pain, considering introducing an Internet-delivered pain management program based on the principles of cognitive behavioral therapy.
The progress of many of these initiatives can be automatically monitored through a claims administrator’s technology solution, where a yellow or red flag is raised when prices paid exceed the legislated maximum amounts, when a pharmacological step therapy or progressive plan has been breached or when non-pharmacological therapy goals have not been achieved.
Using these initiatives, as opposed to restricting specific manufacturers or medications through a closed formulary, will undoubtedly yield a far better outcome for the injured worker and lower the cost to the employer, benefiting all involved.