Health insurer Cigna Corp has discontinued its policy of requiring doctors to seek authorization before treating opioid addicts, as part of a fight against an epidemic of opioid abuse, New York Attorney General Eric Schneiderman said on Friday.

The policy change will apply nationally, said Schneiderman, who has been pushing for easier access to treatments for the estimated 2.2 million Americans who need treatment for abuse of heroin or prescription painkillers.

Preauthorization requirements can lead to significant delays in treatment, and other health insurers are encouraged to follow Cigna's lead, Schneiderman said in a statement.

Lawmakers around the country are seeking ways to stem the epidemic, which kills 78 Americans every day.

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Fewer than half of addicts are receiving help, according to the U.S. Centers for Human and Health Services.

The two drugs predominantly used to treat opioid addiction are methadone, which is dispensed only in government-endorsed clinics, and the less-addictive buprenorphine, which exists as a pill, a strip of film, or as part of an implant.

These treatments are generally administered along with behavioral therapy and recovery support.

Evidence suggests that the use of these drugs as part of the overall treatment program is more effective than short-term detoxification programs aimed at abstinence, according to the U.S. Food and Drug Administration.

Cigna previously required doctors to submit a prior-approval form for medication-assisted treatment (MAT) requests, answering questions about the patient's current treatment and medical history.

Under current law, a doctor can treat a maximum of 275 addicts, and only after obtaining government certification and procuring a special Drug Enforcement Administration license.

This is done to minimize the risk of illicit redistribution of opioid dependency treatments, but opponents argue that the approach has left the healthcare system unable to cope with the rising number of addicts.

Drugmakers including BioDelivery Sciences International Inc , Indivior Plc and privately owned Braeburn Pharmaceuticals are developing or have approved buprenorphine treatments for opioid dependency.