Talks are under way for an additional season of "Two and a Half Men," as the fates of "Golden Boy," "Vegas," "CSI: NY" and "Rules of Engagement" remain up in the air.

CBS has renewed the bulk of its primetime lineup, announcing the pickups of four comedies, nine dramas, three reality shows and two newsmagazines.

The comedy renewals include 2 Broke Girls and Mike & Molly, which join the previously picked up half-hours How I Met Your Mother and The Big Bang Theory.

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On the drama side, the network has added additional seasons of NCIS: Los Angeles, Person of Interest, Elementary, Hawaii Five-0, The Mentalist, Blue Bloods and The Good Wife.

On the unscripted front, The Amazing Race, Survivor and Undercover Boss will return, and veteran newsmagazines 60 Minutes and 48 Hours will also be back.

For its part, negotiations are continuing with CBS and Warner Bros. Television for an 11th season of Two and a Half Men, with all signs pointing to a likely return.

Not included in the early renewals are Criminal Minds, CSI: New York and Rules of Engagement or freshman dramas Golden Boy and Vegas. CSI: NY, which recently finished its ninth season on the network, saw ratings dip in its Friday hour this past year, averaging just a 1.4 rating with adults 18-49 and 9.6 million viewers. It remains robust for the night, however, trailing only scripted ventures Blue Bloods and NBC's Grimm in the key demo. CSI saw its long-running Miami-based spinoff shutter last season. Criminal Minds, from ABC Studios, has averaged a 3.0 in adults 18-49, averaging 15 million total viewers.

As for the freshmen, Vegas recently was displaced to Friday after a softer midseason performance on Tuesday nights. It's averaging a 1.7 rating with adults 18-49 and 10.9 million viewers to date. The expensive production, a period piece starring Dennis Quaid, lost its demo edge early in the season. Golden Boy, CBS' only midseason debut, started stronger than its Tuesday time slot predecessor but recently hit a low of just a 1.4 rating with adults 18-49.

Rules, which is not expected to return as many of its core cast already have booked pilots in first position, is averaging a 2.7 in the demo and 8.1 million viewers, with very low DVR growth (18 percent).

The move comes as CBS heads into the season's homestretch up 3 percent among the coveted 18-49 demo. The network, which got off to a rocky start with nonstarter Made in Jersey and a softer Monday night comedy block, has regained steam with February's Super Bowl providing a nice lift.

Yet again, the net is poised to wrap up the 2012-13 season in first place among total viewers.