Don’t waste time on an appeal when you can get a simple reopening instead. But you have to get your reopening ducks in a row. So reminds one HHH Medicare Administrative Contractor in a recent post to its website. The Centers for Medicare & Medicaid Services “defines clerical errors (including minor errors or omissions) as human or mechanical errors on the part of the party or the contractor,” MAC CGS explains. That would include math errors, transposed diagnostic codes, computer errors, or incorrect dates of service, the MAC offers. When billing a Clerical Error Reopening, you must submit with the correct Type of Bill (TOB); submit with the correct denied Document Control Number (DCN); and bill with the D9 condition code, CGS instructs. See tips for reopenings at https://cgsmedicare.com/hhh/ appeals/reopenings.html.