The Feds, including Medicare officials, are taking strong action against some physicians, for-profit labs and addiction-treatment centers for allegedly ordering  and/or conducting too many urine tests to see if patients are abusing opioids, reports The Arizona Republic.

Of particular interest are  private labs that  federal investigators say offer incentives to physicians to frequently refer patients for lucrative testing.  In response, says the paper, Medicare, citing the potential for billing abuses, “is overhauling its billing codes and payment rates used for drug tests.”