Say so long to J7184 and Q2041. Double check the 2012 HCPCS codes before you report hemophilia clotting factors provided Jan. 1, 2012, or later. Corifact: In patients with congenital factor XIII deficiency, Corifact "is used to replace the missing Factor XIII and raise Factor XIII levels." Wilate: The creation of J7183 completes a series of Wilate changes over the last year which saw J7184 (Injection, von Willebrand factor complex [human], Wilate, per 100 I.U. vWF: RCo) deleted and replaced with Q2041 (Injection, von Willebrand factor complex [human], Wilate, 1 I.U. vWF: RCo) in July 2011. In 2012, both J7184 and Q2041 are defunct codes that will cause denials. You should use only J7183.