Veen was activated from the minor-league injured list and promoted to Triple-A Albuquerque on Friday, MLB.com reports.
Double-A Hartford placed Veen on its 7-day injured list July 27 with a right thumb injury, MLB.com reports.
Veen (back/hand) was reinstated from Double-A Hartford's 7-day IL on Tuesday, Thomas Harding of MLB.com reports.
Veen (back) began a rehab assignment at the Arizona Complex League on Friday, MLB.com reports.
Veen (back) has had his recovery slowed by an injury to his left hand and thumb, MLB.com reports.
Double-A Hartford sent Veen (back) to the Rockies' rookie-level Arizona Complex League affiliate Monday to begin a rehab assignment.
Veen is on the 7-day injured list at Double-A Hartford with a lower-back strain, Patrick Saunders of The Denver Post reports.
Rockies director of player development Chris Forbes said in an interview on MLB Network Radio on Thursday that Veen (hand) could play winter ball this offseason, Jon Morosi of MLB Network reports.
Double-A Hartford transferred Veen (hand) from its 7-day injured list to the 60-day IL on Saturday.
Veen (wrist) has gone 5-for-12 with a triple, three doubles, seven RBI, three runs and a stolen base in three games since Double-A Hartford reinstated him from its 7-day injured list Thursday.