Heading and Altitude?
So I know for a VFR flight if you are flying a heading between 0-179 above 3,000 agl you need to be flying an odd thousand plus 500. For a heading of 180-359 even thousand plus 500. My question is; say i'm at 4,500 on a 350 heading and for my x-country need to momentarily turn right heading 090 for approx say 10 miles would I need to climb or descend to maintain that odd thousand plus 500 even though it will only be for 10 miles and than turn back to the heading of 350 and go back 4,500? I assume I could just let approach know the situation just wanted to hear it here first. Thanks in advance !👍