Monitoring, Auditing, and Internal Review
What this domain tests
Distinguish monitoring (ongoing, routine, often real-time checks built into workflows) from auditing (periodic, independent, systematic examination against criteria). Know the audit lifecycle: scope and objective, risk-based sampling, criteria, data collection, analysis, findings, reporting, corrective action, and follow-up/re-audit.
Understand sampling basics: random vs. targeted vs. stratified; sample size driven by risk and confidence; the difference between an error rate and a statistically valid projection. Know that auditors should be independent of the process audited, and that findings need root-cause analysis, not just restatement.
Traps to expect
- Monitoring vs. auditing: a daily edit check is monitoring; a quarterly chart review of 30 records is auditing.
- Independence: having the billing manager audit their own team undermines the result.
- Follow-up: an audit with findings but no corrective action or re-audit is incomplete.
- Projection error: extrapolating a small non-random sample to the whole population is invalid.
- Documentation: criteria, sample selection method, and results must be recorded.
Rule of thumb
Every audit answer needs three things: criteria, evidence, and a closed loop. If a proposed answer lacks corrective action and verification, keep looking.
Worked example
A compliance office audits 25 randomly selected inpatient claims for medical necessity. Four lack supporting documentation (16% error rate). Because the sample was random, the finding can be projected with caution, but the immediate action is root-cause analysis - e.g., template gaps in the history - plus education and a re-audit of 25 new claims in 90 days. Simply firing the coders or ignoring the 16% as "small" are both wrong.