(Flickr/Be.futureproof)
On Thursday, health-insurance giant Cigna announced it was taking major steps to prevent and treat addiction.

While the company is specifically targeting addiction to opioid painkillers like OxyContin and Vicodin — it highlights a far bigger problem as well.

There are currently no standards of medical care for treating addiction in this country.

"Unlike what we see in other chronic conditions, such as diabetes and cardiovascular disease, there currently exists no road map of evidence-based best practices for physicians to follow to effectively and efficiently treat substance use disorders like opioid addiction," Douglas Nemecek, Cigna's chief medical officer of behavioral health, told Business Insider.

Opioid painkillers kill more Americans than heroin, according to the CDC, and may also have played a role in Prince's death.

Cigna plans to slash its customers' opioid-painkiller use by 25% over the next three years. The program would make Cigna one of the largest insurance companies to put such a plan in place.

Still, without a road map like the kind Nemecek described, physicians are powerless to help patients who are struggling with addiction.

Between 2000 and 2014, nearly half a million Americans died from overdoses involving these drugs. And the rates of these deaths jumped 14% from 2013 to 2014, according to the CDC.

Opioid painkillers aren't the only problem. Studies suggest many prescription-drug users who become addicted switch to the illegal drug heroin because of its cheaper price.

But the issue extends to other perfectly legal drugs like alcohol and nicotine as well. An estimated 7.6 million Americans, or one in every 12 US adults, suffers from alcohol addiction, according to the National Council on Alcoholism and Drug Dependence Inc.

And cigarette smoking kills 480,000 Americans each year, including nearly 42,000 from secondhand-smoke exposure, according to the CDC.

(Dragan Radovanovic/Business Insider)

In this vein, Cigna is doing something that few other insurance companies have done, which is trying to come up with a road map for physicians to use to treat addiction to opioid painkillers.

As part of the company's announcement to curb opioid-painkiller use rates by 25%, Cigna earlier this month announced a new partnership with the American Society of Addiction Medicine (ASAM) to "verify what works in the treatment of patients with addiction, make the medical community aware of proven strategies, and hasten the adoption of these successful methods," the company wrote in a press release. Cigna will be sharing two years' worth of insurance-claim data with ASAM covering medical, behavioral, and pharmacy claims.