Evaluation and Management (E/M) Guidelines & Medical Decision Making (MDM) Scoring
Key Takeaways
- Following the 2021 and 2023 CPT revisions, Evaluation and Management (E/M) code selection for office, outpatient, inpatient, observation, and emergency department visits is determined strictly by Medical Decision Making (MDM) or Total Time.
- MDM scoring evaluates three core elements: Number and Complexity of Problems Addressed, Amount and/or Complexity of Data Reviewed and Analyzed, and Risk of Complications and/or Morbidity or Mortality.
- To achieve a specific level of MDM (Straightforward, Low, Moderate, High), the clinical documentation must meet or exceed the minimum threshold requirements for at least 2 of the 3 MDM elements.
- Data Category scoring requires strict differentiation: ordering and reviewing the same test during an encounter counts as one unique item, and tests separately billed by the provider cannot be counted toward MDM Data.
- Social Determinants of Health (SDOH) can escalate the Risk element to Moderate MDM only when documentation demonstrates that SDOH significantly limited diagnosis or treatment decisions.
Evaluation and Management (E/M) Guidelines & Medical Decision Making (MDM) Scoring
The Evaluation and Management (E/M) coding framework underwent landmark revisions in 2021 (for Office and Outpatient codes 99202–99215) and 2023 (for Facility, Inpatient, Observation, Emergency Department, Nursing Facility, and Domiciliary codes 99221–99239, 99281–99285, etc.). These changes eliminated the historical requirement to score History and Physical Examination elements (such as HPI, ROS, PFSH, and exam body areas) to select code levels. While a medically appropriate history and physical exam must still be performed and documented, final E/M code selection is driven strictly by Medical Decision Making (MDM) OR Total Time.
Audit Warning: Auditors must no longer downcode an E/M encounter simply because a multi-system Review of Systems (ROS) or comprehensive physical exam was omitted, provided the documented history and examination were medically appropriate for the patient's presenting clinical condition.
The Three Elements of Medical Decision Making (MDM)
CPT defines Medical Decision Making as the process in which a physician or qualified healthcare professional (QHP) establishes diagnoses, assesses the severity of health problems, and chooses management options. MDM is evaluated across three core elements:
Element 1: Number and Complexity of Problems Addressed
To count toward MDM, a problem must be addressed during the encounter. A problem is addressed when it is evaluated or treated by the reporting provider (e.g., ordering tests, prescribing meds, monitoring, or deciding on watchful waiting). Problems noted in past medical history that require no evaluation or management do NOT count.
- Minimal: 1 self-limited or minor problem (e.g., cold, localized rash, small insect bite).
- Low: 2 or more self-limited or minor problems; 1 stable chronic illness (e.g., well-controlled hypertension on maintenance meds); 1 acute, uncomplicated illness or injury (e.g., uncomplicated cystitis, minor ankle sprain).
- Moderate: 1 or more chronic illnesses with exacerbation, progression, or side effects of treatment (e.g., poorly controlled asthma flare); 2 or more stable chronic illnesses; 1 undiagnosed new problem with uncertain prognosis (e.g., breast lump requiring biopsy); 1 acute illness with systemic symptoms (e.g., pyelonephritis, lobar pneumonia); 1 acute complicated injury (e.g., concussion with loss of consciousness).
- High: 1 or more chronic illnesses with severe exacerbation, progression, or side effects of treatment (e.g., acute decompensated heart failure); 1 acute or chronic illness or injury that poses a threat to life or bodily function (e.g., acute myocardial infarction, pulmonary embolism, severe sepsis).
Element 2: Amount and/or Complexity of Data to Be Reviewed and Analyzed
Data scoring evaluates the cognitive effort involved in reviewing external medical records, ordering tests, and consulting external experts. Data is categorized into three distinct categories:
Category 1: Tests, Documents, or Independent Historian(s)
- Any combination of 2 items (Low Data) or 3 items (Moderate Data) from the following:
- Review of prior external note(s) from each unique source.
- Review of the result of each unique test.
- Ordering of each unique test.
- Assessment requiring an independent historian (e.g., parent, caregiver, surrogate when patient cannot provide history).
Critical Data Audit Rules:
- Ordering vs. Reviewing: Ordering a test and reviewing its result during the same encounter counts as ONE unique test/item, not two.
- Separately Billed Tests: Any test that is separately billed by the reporting provider (e.g., ECG 93000 performed in clinic) CANNOT be counted toward MDM Data scoring.
Category 2: Independent Interpretation of Tests
- Independent interpretation of a test performed by another physician/QHP (not separately reported).
Category 3: Discussion of Management or Test Interpretation
- Discussion of management or test interpretation with an external physician or other QHP or appropriate source (not separately reported).
Element 3: Risk of Complications and/or Morbidity or Mortality
Risk measures the potential severity of adverse outcomes associated with the diagnostic tests and treatment options chosen at the visit:
- Minimal Risk: Rest, OTC medications, minor dressing changes.
- Low Risk: OTC drugs at prescription strength, physical therapy, minor surgery without identified risk factors.
- Moderate Risk:
- Prescription drug management (initiating, modifying, or continuing prescription medications).
- Decision regarding minor surgery with identified patient/procedure risk factors.
- Decision regarding elective major surgery without identified risk factors.
- Diagnosis or treatment significantly limited by Social Determinants of Health (SDOH) (e.g., economic hardship, food insecurity, housing instability impacting treatment compliance).
- High Risk:
- Drug therapy requiring intensive monitoring for toxicity (e.g., warfarin requiring routine INR monitoring, IV chemotherapy, lithium requiring serum levels).
- Decision regarding elective major surgery with identified risk factors.
- Decision regarding emergency major surgery.
- Decision regarding hospitalization or escalation of hospital-level care.
- Decision not to resuscitate or to de-escalate care due to poor prognosis.
The 2-Out-of-3 MDM Scoring Rule and Audit Matrix
To determine the final MDM level, the documentation must satisfy or exceed the required scoring thresholds for at least 2 out of the 3 MDM elements.
| Final MDM Level | Code Level (Office Estab / New) | Problem Complexity | Data Complexity | Management Risk |
|---|---|---|---|---|
| Straightforward | 99212 / 99202 | Minimal | Minimal / None | Minimal |
| Low | 99213 / 99203 | Low | Low (Cat 1: 2 items) | Low |
| Moderate | 99214 / 99204 | Moderate | Moderate (1 of 3 Cats) | Moderate |
| High | 99215 / 99205 | High | High (2 of 3 Cats) | High |
Case Study Audit Calculation
An established patient presents with poorly controlled Type 2 Diabetes (Moderate Problem) and hypertension. The physician orders a CBC and CMP (2 Category 1 Data items = Low Data). The physician adjusts the insulin dosage (Prescription Drug Management = Moderate Risk).
- Problem Complexity: Moderate
- Data Complexity: Low
- Management Risk: Moderate
Audit Outcome: Applying the 2-out-of-3 rule, 2 elements (Problem and Risk) reach the Moderate level. The final MDM score is Moderate, supporting CPT code 99214.
An auditor is scoring an office encounter for an established patient. The physician documents: 1) Evaluation of 2 stable chronic conditions (hypertension and hyperlipidemia), 2) Review of 1 external lab result from a specialist, and 3) Continuation of 2 current prescription medications. What is the correct final MDM level?
During an E/M audit, a provider claims 3 Data items in Category 1 for: 1) Ordering a complete blood count (CBC), 2) Reviewing the CBC result later that afternoon, and 3) Ordering a chest X-ray that the provider performs and bills separately under CPT 71045. How should the auditor score Data?
Which clinical management decision automatically elevates the Risk element of MDM to High Risk?
An auditor reviews a 2023 inpatient initial visit (99222). The documentation contains a comprehensive History of Present Illness and Moderate MDM, but the provider did not document a Review of Systems (ROS). How should the auditor handle the code selection?