Striker Cameron Jerome (ankle), midfielder Barry Ferguson (ankle) and central defender Roger Johnson (calf) are all battling to be available.
Johnson was unable to train ahead of the midweek encounter with Manchester City but battled through the 90 minutes. If he is ruled out, boss Alex McLeish could hand a debut to new signing Curtis Davies.
Blues are still waiting to see if loan signing Obafemi Martins will obtain a visa in time to face the Hammers.
Source: PA
Source: PA