Long-term care provider Signature HealthCARE billed Medicaid about $2 million for unapproved costs, auditors with the Tennessee Comptroller’s Office charged Monday.

The costs related to marketing expenses, facility owner compensation and other charges unrelated to resident care, according to local reports.

“As mentioned in the state’s audit report, this matter is strictly an accounting and auditing function, and does not address or affect the quality of the care we provide in any way,” said Signature spokesman Ben Adkins. “These audits are a matter of routine for all Tennessee healthcare providers.”

Signature is cooperating fully with government entities and providing quality care remains the company’s top priority, Adkins added.

Louisville-based Signature has 28 facilities in Tennessee, according to the company’s website. It is the 11th-largest nursing facility company in the country, according to 2014 rankings compiled by the American Health Care Association/National Center for Assisted Living.