  We present the recent results from combinations of searches for a standard
model (SM) Higgs boson ($H$) by the CDF and D0 experiments at the Tevatron
$p\bar p$ collider at $\sqrt{s}=1.96$ TeV. The data correspond to an integrated
total luminosity of 8.2 (CDF) and 8.6 (D0) fb$^{-1}$. Compared to the previous
Tevatron Higgs boson search combination more data have been added, additional
channels have been added, and some previously used channels have been
reanalyzed to gain sensitivity. No excess is observed above background
expectation, and set 95% C.L. upper limits (median expected) on Higgs boson
production at factors of 1.17 (1.16), 1.71 (1.16), and 0.48(0.57) times the SM
predictions for Higgs bosons of mass $m_H$=115, 140, and 165 GeV/c$^2$,
respectively. We exclude a standard-model Higgs boson in the mass range
156--177 GeV/c$^2$ at the 95% C.L, with an expected exclusion region 148--180
GeV/c$^2$. The absence of a Higgs boson signal also constrains some new physics
such as $4^{th}$ generation models and other exotic models.
