Support: Professional, Other Professional Services.
The residual support PSC for other professional services.
PSC R499: other professional services. IT Custom Solution delivers cross-discipline professional services for federal and commercial buyers.
In federal procurement.
R499 is the federal PSC for other professional services: specialized professional work that does not fall under a named professional-services PSC. Agencies use it for hybrid or cross-discipline scopes. It is the support-services counterpart to NAICS 541990 and is filed in ITC’s SAM PSC assertions for scopes that span categories.
The same capability, commercially.
Commercially, R499 represents the cross-discipline professional engagement: a single provider spanning advisory, build, and operations rather than three vendors. Mid-market firms consolidating vendors buy this. ITC’s four-practice structure is built for scopes that no single-discipline firm covers alone.
What falls under R499.
Common questions.
When is PSC R499 used instead of R425?
R425 is specifically engineering and technical services; R499 is the residual professional-services code for other or cross-discipline professional work that does not fit a named code.
Related codes.
Send the scope.
We'll confirm the right PSC and NAICS for your solicitation, government or commercial.