Watch our for reenrollment form pitfalls when it's your turn to revalidate. "Many Medicare enrollment applications (CMS-855A) are not being completed correctly by home health agencies ... when revalidating their Medicare enrollment information with CGS," the HHH MAC says on its website. "Sections 5 and 6 of the CMS-855A appear to be the most problematic for HHAs." Tip: Exact percentages are required for seven data elements in Sections 5 & 6, CGS says. Plus: Remember that direct ownership can't exceed 100 percent. But "indirect ownership percentages in Section 5 and individual indirect ownership percentages in Section 6 can, and typically will, exceed 100 percent," CGS advises. More information on filling out the form correctly is at http://cgsmedicare.com/hhh/pubs/news/2012/0412/629.html.