Final answer:
Internal monitoring and auditing per the OIG should incorporate focused, baseline, and periodic audits, as well as evaluations of all denied claims to ensure comprehensive compliance oversight of all correct options.
Step-by-step explanation:
According to the Office of Inspector General (OIG), internal monitoring and auditing should be performed through various means to maintain effective compliance. Focused audits are important for addressing specific issues that have been identified by a compliance officer.
Baseline audits provide a starting point for understanding the current state of compliance and identifying areas for improvement. Periodic audits should be conducted regularly to ensure continuous compliance and to catch any deviations early on.
Lastly, conducting audits on all denied claims is crucial to understand the reasons behind denials and to correct any systemic issues that may be leading to these denials.