High Medical Decision Making: Part Two – Data
Pexels: Markus Winkler
In Part One, we addressed how the nature of the presenting problem contributes to MDM level selection. Part Two focuses on the data analysis component of MDM—an area that frequently drives audit findings due to overcounting or misinterpretation. When leveling an E/M service, providers are only required to meet two of the three MDM elements. It is important to note that while the data categories for Moderate and High MDM are the same, High MDM requires that two of the three data categories be met, rather than a single category.
Category 1: Tests, Documents, or Independent Historian(s)
Common Misunderstanding #1:
“Reviewing and ordering the same test counts twice.”
Reality:
If you are the billing provider, ordering a test counts once. Reviewing your own ordered test does not create additional credit. Review is inherent to ordering and managing the result. The AMA explicitly distinguishes “ordered or reviewed” as a single unit of data, not cumulative credit.
What Counts in Category 1 (When You Are the Billing Provider)
You may count each unique CPT‑defined test once per encounter for one of the following actions:
- Ordering the test
- Reviewing the result of the test
- Reviewing prior external notes (from each unique source)
A panel counts as one test because it has one CPT code, even if it contains multiple analytes.
Example:
- Ordering a CMP → 1 data point, not 14
- Ordering COVID/Flu PCR combo (one CPT) → 1 data point
What Does Not Count
❌ “Labs reviewed” (templated phrase with no specificity)
❌ Reviewing results the provider ordered at the same visit
❌ Reviewing daily labs repeatedly during the same hospital course
❌ Re‑reviewing unchanged imaging from prior encounters
CMS and MAC reviewers treat these as background work, not incremental decision‑making.
Frequency Rule
Unless data is new, it doesn’t count again.
- A new test, new result, or new external record = countable
- Re‑review of the same data across multiple visits or progress notes = no additional credit
This principle is consistently reinforced in CMS audit guidance and professional coding publications.
Independent Historian: What It Is—and Isn’t
Common Misunderstanding #2:
“Family present = independent historian.”
Reality:
An independent historian is required only when the patient cannot provide a reliable history due to:
- Age
- Cognitive impairment
- Developmental status
- Altered mental status
Routine parental or spouse confirmation does not qualify by itself.
Texas Medicaid and Medicare both defer to CPT definitions for this element. No expanded state‑specific credit exists.
Category 2: Independent Interpretation of Tests
This Is One of the Most Misapplied Categories
Independent interpretation means:
- You personally reviewed the image, tracing, or specimen
- You documented your own impression
- You did not bill the professional interpretation
It is not met by:
❌ Quoting the radiologist’s report
❌ Writing “X‑ray reviewed” without findings
❌ Interpreting a test you are separately billing
AMA errata clarified that a test may count as both ordered and independently interpreted only if the professional component is not billed.
Example of compliant documentation:
“I independently reviewed the chest X‑ray and noted a subtle right lower lobe infiltrate, supporting treatment escalation.”
Category 3: Discussion of Management or Test Interpretation
Common Misunderstanding #3:
“Discussed with colleague” always counts
Reality:
To count, the discussion must be:
- With an external physician or QHP
- Not in the same group or same specialty
- Related to management or interpretation
- Not separately reported
Internal curbside consults do not count. This limitation is explicitly stated in AMA CPT guidance and reinforced by MAC education materials.
Texas Medicaid follows CPT and does not allow intra‑group expansion of this category.
Commercial Payer Alignment
Commercial payers (BCBS, UnitedHealthcare, Aetna, Cigna) have largely adopted the AMA/CMS framework for MDM data:
- They expect CPT‑based definitions
- They audit for double‑counting and templated overuse
- They deny claims that inflate Category 1 activity through repetition
While prior authorization rules differ, MDM scoring methodology does not.
Key Takeaways
- ✅ Data must be new, unique, and relevant to decision‑making
- ✅ You get credit once, not per note or per mention
- ❌ Review of self‑ordered tests ≠ additional data
- ❌ Repeating prior data ≠ higher MDM
- ✅ Independent interpretation requires your own documented analysis
- ✅ CMS, Novitas, Texas Medicaid, and commercial payers are aligned
Medical Decision Making: Part 3 – Risk (coming soon)