Part B Insider (Multispecialty) Coding Alert

Physician Notes:

Heed Updated MAC Advice on MBIs

Published on Tue Jan 22, 2019

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Caution: Don’t report HICNs and MBIs on same claim.

Now that CMS has finished up its new Medicare card distribution to existing beneficiaries, providers still have until January 2020 to switch to using the new Medicare Beneficiary Identifier (MBI) number instead of the old Social Security Number-based Health Insurance Claim Number (HICN).

Until Dec. 31, 2019, CMS “will offer a transition period during which the system will accept both HICNs and MBIs on Medicare transactions (including eligibility requests and claims) for beneficiaries in the Medicare program prior to April 1, 2018 (i.e., those who received a HICN on their Medicare card),” MAC Palmetto GBA notes in a new article on its website.

Warning: However, “providers should not submit both numbers on the same transaction,” Palmetto stresses.

Providers also shouldn’t use the grace period to continue an old shortcut — submitting claims with just the patient’s Social Security Number with an “A” suffix. “This has caused thousands of claims to reject,” criticizes MAC CGS in a new article on its website. “As you know, rejected services are a huge time-waster for you because you have to handle the claim a second time, fix it, then resubmit for processing.”

Keep in mind: “A patient may have Medicare benefits under a spouse or parent; therefore, the … HICN may not include the social security number of the patient being treated,” CGS reminds.