Arizona’s Medicaid program accidentally sent the personal health information of 3,146 members to incorrect physical home addresses, state officials say.

An internal AHCCCS investigation was initiated after a programming error caused 3,146 IRS 1095-B forms to be misdirected to incorrect physical home addresses, AHCCCS officials said Monday.

Those affected have been notified, officials added.

The IRS 1095-B Form reports an individual’s enrollment in a qualified health plan. The AHCCCS IRS 1095-B forms contained a name in conjunction with date of birth. No Social Security numbers were included on the form, state officials said.

Medicaid in Arizona is called the Arizona Health Care Cost Containment System, or AHCCCS. Medicaid is a government health insurance program for low income people, and AHCCCS currently enrolls 1.87 million people, which works out to one in every four Arizonans.

State officials advise affected members who are concerned that their information may be used incorrectly advise doing one of three things:

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