How this worksWe recognize the 14 federal Medicare beneficiary notices by their form number and heading (ABN, NOMNC, DENC, MOON, MCSN, MA-IDN, and the rest — plus MSN Part A, B, and DME). Anything that doesn't match a known template gets flagged as unrecognized so you can double-check with a real person before acting. We use only the printed deadline on your document — we never compute one from a general rule.