1
Define the Question
Identify the code, service, modifier, diagnosis, or documentation issue under review.
Audit-Ready Resource Center
Audit Decision Trees
Step-by-step visual pathways that help coders and auditors make consistent, defensible coding, documentation, and compliance decisions.
The Five-Step Decision Process
Use the same structured sequence for coding validation, documentation review, modifier analysis, medical necessity, and escalation.
2
Confirm the Evidence
Review the complete record and separate documented facts from assumptions.
3
Follow the Official Guidance
Apply the appropriate official coding guidelines, payer policy, or organizational standard before reaching a conclusion.
4
Determine the Outcome
Decide whether the item is supported, unsupported, unclear, or requires escalation.
5
Document the Rationale
Record the evidence, authority, impact, and next action so another reviewer can reproduce the decision.
Core Decision Pathways
Each pathway starts with a focused question and follows the documented evidence.
Documentation Support
Decision question: Is the required information present?
YES: Assess clarity, specificity, linkage, and clinical support.
NO: Identify the documentation gap; do not infer missing facts.
NO: Identify the documentation gap; do not infer missing facts.
Code Selection
Decision question: Does the documented condition or service meet the code definition?
YES: Validate sequencing, specificity, and instructions.
NO: Select a supported alternative or document the unsupported code.
NO: Select a supported alternative or document the unsupported code.
Modifier Review
Decision question: Does the record establish the circumstance represented by the modifier?
YES: Verify payer policy, edits, timing, and distinctness.
NO: Remove or question the modifier.
NO: Remove or question the modifier.
Medical Necessity
Decision question: Is the service correctly coded and supported?
YES: Evaluate coverage criteria and clinical indication.
NO: Resolve coding or documentation before coverage review.
NO: Resolve coding or documentation before coverage review.
Escalation
Decision question: Can the issue be resolved using the available record and authority?
YES: Document the conclusion and disposition.
NO: Route for clarification, compliance review, or leadership decision.
NO: Route for clarification, compliance review, or leadership decision.
Decision Tree Safeguards
Use these controls to keep decisions factual, reproducible, and audit-ready.
Use the Complete Record
Do not make a final decision from one note section, one code, or one data element.
Follow the Official Guidance
Apply the appropriate official coding guidelines, payer policy, or organizational standard before reaching a conclusion.
Separate Coding From Intent
An unsupported code or modifier is not automatic evidence of fraud or abuse.
Preserve the Audit Trail
Retain the reviewed evidence, methodology, rationale, and final disposition.
Define Escalation Criteria
Specify when uncertainty, materiality, pattern risk, or policy conflict requires more review.
Reassess the Pathway
Update decision trees when regulations, code sets, payer policies, or internal processes change.
Document the Decision
A reproducible decision record explains the question, evidence, authority, conclusion, impact, and next action.
Question
What specific coding, documentation, billing, or compliance issue was evaluated?
Evidence
What facts from the complete record support the decision?
Authority
What guideline, edit, payer policy, or organizational standard applies?
Conclusion
Was the item supported, unsupported, unclear, or escalated?
Impact
What compliance, reimbursement, quality, or operational effect results?
Action
What correction, education, clarification, monitoring, or escalation is appropriate?
Three Questions Before Finalizing
QUESTION 1Does the medical record support my decision?
QUESTION 2Did I follow the applicable official guidelines, payer policy, or organizational standard that supports this decision?
QUESTION 3Could another coder or auditor reproduce the same conclusion from the same record?
Think Like an Auditor.
Code with Intent. Defend with Confidence.