SeaStar Medical is trading at $3.70, down 21.11%, with no verified explanation for the pre-market decline. - Shares fell from the October 2 close of $4.69; supplied price context includes no pre-market volume data. - New inpatient ICD-10-PCS codes for its SCD therapy became available October 1, but reporting does not establish that news as the cause or explain the sharp drop. - Major indexes were nearly flat in the supplied market context, which does not clearly account for the move.