* Mussaf is always recited back-to-back with shacharis, and inserted before the end-of-shacharis עָלֵינוּ and psalm of the day; it does not add additional kaddishes to the service. Besides, after the sheloshim I determined to reclaim some of my time by reciting a halachically minimal bare-bones service in the morning from Monday to Friday and then leaving shul after בָּרְכוּ; by chosing not to count mussaf separately it means I don't count the kaddishes after עָלֵינוּ on the times rosh chodesh fell on a non-Sunday weekday as missed services.
† I didn't try and get there for the kaddishes before פְּסוּקֵי דְזִמְרָה because I knew they wouldn't have a minyan; I assumed I'd be able to say kaddish later in the service, like on any other day of the year. I was surprised to discover those were in fact the only mourner's kaddish and kaddish derabbanan in the entire day (aside from those the previous evening).
—Originally posted on Dreamwidth, where there are