They offer data for direct download in finer resolution[0], here are the relevant figures from HS6 rev. 2007 (2008 - 2017) - Product Trade by Year and Country (6 digit depth):

    $ awk 'NR == 1 || ($1 == 2017 && $2 == "usa" && $3 ~ /3002../)' < year_origin_hs07_6.tsv
    year    origin  hs07    export_val      import_val      export_rca      import_rca
    2017    usa     300210  396430658.00    59890506.00     2.838   0.258
    2017    usa     300220  1581667842.36   5492721193.76   0.829   1.734
    2017    usa     300230  735316335.89    15520567.21     2.725   0.035
    2017    usa     300290  24682749156.47  20875470805.73  2.452   1.249

So, $396M, assuming that 300210 is the sum of all the ones with "blood" in the descriptions from your HS code reference.

"Human or animal blood" seems like an odd choice of abbreviation for "Human blood; animal blood for therapeutic, prophylactic or diagnostic uses; antisera, other blood fractions, immunological products, modified or obtained by biotechnological processes; vaccines, toxins, cultures of micro-organisms (excluding yeasts) etc"[1], but hey.

(Though America still has a problem with exploiting poor people for blood products, even if it's not a billion dollar industry.)

[0] https://oec.world/en/resources/data/

[1] https://www.foreign-trade.com/reference/hscode.htm?cat=5