Primus Capital Funds has made an investment in Healthcare Bluebook, according to a news release.

Healthcare Bluebook, based in Nashville, is an independent provider of healthcare price and quality transparency solutions.

Primus Capital, with offices in Cleveland and Atlanta, is a growth-oriented private equity firm that invests in healthcare, software and technology-enabled services companies. Founded in 1984, Primus pursues buyouts, recapitalizations, secondary share purchases and expansion financings.

Terms of the transaction were not disclosed.