Think Like an Auditor

Audit Readiness Checklist

A practical pre-audit checklist for medical coders covering documentation, code assignment, sequencing, modifiers, medical necessity, and quality validation.

Use this original checklist to complete a defensible final review and prepare for internal quality audits, payer reviews, and coding validation.

Coder readiness purpose: Confirm that code assignment is accurate, fully supported, properly sequenced, medically necessary, and defensible before submission or audit review.

Current Coding Resources

  • Current ICD-10-CM, CPT®, HCPCS Level II, and applicable coding references are available.
  • Current official coding guidelines and annual updates have been reviewed.
  • Applicable NCCI edits, payer policies, local coverage requirements, and organizational guidance are accessible.
  • Outdated code books, references, and saved instructions have been removed or clearly identified.
  • Code descriptors and effective dates are verified before final code assignment.

Patient & Encounter Verification

  • The correct patient, date of service, provider, and encounter are selected.
  • The place of service and encounter type are accurate.
  • New versus established patient status is verified when applicable.
  • The reported services correspond to the correct medical record.
  • Duplicate, incomplete, or mismatched records are resolved before coding.

Documentation Completeness

  • The note is complete, signed, dated, and authenticated.
  • The reason for the encounter is clearly documented.
  • The assessment and plan support the diagnoses reported.
  • Procedures, services, medications, supplies, and units are documented when applicable.
  • Conflicting, unclear, or missing information is addressed through the approved query or escalation process.

Diagnosis Coding Readiness

  • Every diagnosis code is supported by provider documentation.
  • Codes are assigned to the highest supported specificity.
  • Laterality, acuity, severity, stage, episode of care, and status are captured when applicable.
  • Combination code, manifestation, etiology, symptom, screening, follow-up, history, and status rules are applied correctly.
  • First-listed or principal diagnosis sequencing is supported by the encounter circumstances and applicable guidelines.

Procedure & Service Coding Readiness

  • Every CPT® or HCPCS Level II code is supported by the documented service.
  • The most accurate and specific code is selected.
  • Bundled and integral services are not separately reported without support.
  • Add-on codes, units, drugs, supplies, and devices are reported correctly.
  • Unlisted codes are used only when no existing code accurately describes the service.

E/M Level Validation

  • The correct E/M code family and category are selected.
  • Medical decision-making supports the reported level when used for code selection.
  • Problems addressed, data reviewed and analyzed, and risk of management are documented.
  • Time-based coding meets the current category requirements when applicable.
  • The E/M level is not based on note length, template volume, or copied-forward text.

Modifier & Edit Review

  • Every modifier is supported by the medical record.
  • Modifiers 24, 25, 57, 59, or X{EPSU} are applied only when their requirements are met.
  • Anatomical, bilateral, repeat-procedure, assistant-surgeon, and professional or technical modifiers are accurate when applicable.
  • NCCI procedure-to-procedure and medically unlikely edits are reviewed.
  • No modifier is added solely to bypass an edit or obtain payment.

Medical Necessity & Payer Requirements

  • The documented diagnoses support the reported services.
  • The frequency, intensity, and duration of services are clinically supported.
  • Applicable payer policies, coverage requirements, and billing instructions are reviewed when needed.
  • Required orders, referrals, certifications, or prior authorization documentation are present when applicable.
  • Unsupported diagnoses are not added solely to establish medical necessity.

Final Quality Review

  • Diagnosis and procedure codes match the final authenticated documentation.
  • Sequencing, modifiers, units, dates, and place of service have been rechecked.
  • No unsupported code remains on the claim.
  • No supported service within the coder's assigned scope has been omitted without explanation.
  • The code assignment can be clearly explained and defended using the documentation and applicable guidance.

Query & Escalation Readiness

  • The approved provider-query process is used when documentation is unclear, conflicting, incomplete, or clinically inconsistent.
  • Queries are non-leading and supported by the health record.
  • Questions involving payer policy, compliance risk, or unusual billing are escalated appropriately.
  • Potential overcoding, unbundling, unsupported modifiers, or services not rendered are not ignored.
  • Escalations and responses are documented according to organizational policy.

Education & Error Prevention

  • Recent coding updates and organizational education have been completed.
  • Prior audit findings and feedback have been reviewed.
  • Repeated error patterns have been identified and addressed.
  • Personal reference notes are accurate, current, and do not replace official guidance.
  • Additional education is requested when a specialty, service, or policy is outside the coder's current competency.

Audit Response Preparation

  • The coder can identify the documentation supporting each reported code.
  • The coder can explain the sequencing, modifier, and medical-necessity rationale.
  • The official or payer-specific source used for a disputed decision can be located.
  • Coding notes, queries, and approved clarifications are retained according to policy.
  • Audit feedback is reviewed objectively and incorporated into future coding when appropriate.

Coder Readiness Status

☐ Ready for submission
☐ Documentation clarification needed
☐ Coding correction required
☐ Payer-policy review needed
☐ Education opportunity
☐ Escalation required

Coder reminder: Be prepared to identify the documentation and authoritative guidance supporting every diagnosis, procedure, modifier, unit, and sequencing decision.

Educational Disclaimer

This original educational resource is intended as a general coding-quality reference and does not reproduce proprietary code descriptors or tables. Use it with the current ICD-10-CM Official Guidelines for Coding and Reporting, CPT®, HCPCS Level II, CMS and NCCI guidance, payer policies, contractual requirements, and organizational coding standards. CPT® is a registered trademark of the American Medical Association.