Mastering E/M Coding 2026: Medical Decision Making (MDM) Complete Guide

Evaluation and Management (E/M) coding represents approximately 20-25% of the CPC exam and forms the foundation of medical coding in clinical practice. The shift toward Medical Decision Making (MDM) as the primary criterion for selecting E/M codes—fully implemented since 2021 and refined through 2025—represents the most significant change in E/M coding in decades.

This comprehensive guide breaks down everything you need to know about E/M coding for 2026, with special emphasis on MDM, the three critical MDM elements, new telehealth codes, and add-on codes G2211 and G2212 that recognize visit complexity and prolonged services.

E/M Coding 2026 Overview

Evaluation and Management codes describe cognitive, non-procedural services provided by physicians and qualified healthcare professionals (QHPs). These services encompass patient assessment, diagnosis, treatment planning, counseling, and coordination of care.

 📊 E/M Code Categories
 Office or Other Outpatient Services (99202-99215): Most commonly used for office visits
Hospital Inpatient and Observation Care: Merged code sets for initial, subsequent, and discharge services
Emergency Department Services (99281-99285): Level determined by MDM alone
Nursing Facility Services: Initial, subsequent, and discharge visits
Domiciliary, Rest Home, or Home Care: Residential care settings
Prolonged Services: Add-on codes for extended time (G2212)
Telemedicine Services (98000-98015): New 2025 codes for synchronous audio-video and audio-only services

 

Key 2026 Changes

The American Medical Association (AMA) and Centers for Medicare & Medicaid Services (CMS) have refined E/M coding through several critical updates:

MDM Primacy: Medical Decision Making is now the primary determinant for code level selection
Time Flexibility: Time can still be used to select code level, but history/exam requirements no longer tied to time
Simplified Documentation: History and physical exam must be "medically appropriate" but no longer require counting elements
New Telehealth Codes: 17 new codes (98000-98015) replace telephone E/M codes
G2211 Expansion: Visit complexity add-on now payable with modifier 25 for certain preventive services (effective January 2025)
Merged Hospital Codes: Inpatient and observation services consolidated into single code sets

The Shift to Medical Decision Making

Prior to 2021, E/M level selection required meeting specific requirements across three "key components": History, Examination, and Medical Decision Making. The complexity of counting history elements (chief complaint, history of present illness, review of systems, past/family/social history) and examination elements (body areas, organ systems) created administrative burden without always reflecting actual clinical work.

Why the Change?

The shift to MDM-based coding recognizes that:

Clinical Judgment is Central: The cognitive work of diagnosis and treatment planning defines physician effort more than documentation length
Patient Complexity Varies: Simple complaints in complex patients (e.g., cold in diabetic with CHF) require significant decision-making
Administrative Burden Reduction: Counting history/exam elements consumed time without improving care quality
Accurate Reimbursement: MDM better reflects the intellectual effort and risk involved in patient care

💡 Current State: 2025 E/M Coding

Code level is selected by EITHER:

Medical Decision Making (MDM) - complexity of establishing diagnosis, reviewing data, and assessing risk
Total Time - total time spent on date of encounter (see specific time ranges per code)

Choose whichever method most accurately represents the encounter. History and exam must still be "medically appropriate" and documented, but they do NOT determine code level.

Office Visit Codes (99202-99215)

Office or other outpatient E/M services are the most frequently used E/M codes in medical practice. They're divided into two categories based on patient status:

New Patient Office Visits (99202-99205)

A new patient is one who has not received any professional services from the physician/QHP or another physician/QHP of the exact same specialty and subspecialty in the same group practice within the past three years.

Code	MDM Level	Time Range
99202	Straightforward	15-29 minutes
99203	Low	30-44 minutes
99204	Moderate	45-59 minutes
99205	High	60-74 minutes

Note: Code 99201 was deleted in 2021; there is no longer a "minimal MDM" code for new patients.

Established Patient Office Visits (99211-99215)

An established patient has received professional services from the physician/QHP or another physician/QHP of the exact same specialty and subspecialty in the same group practice within the past three years.

Code	MDM Level	Time Range
99211	Minimal (or no MDM)	N/A - typically nurse visit
99212	Straightforward	10-19 minutes
99213	Low	20-29 minutes
99214	Moderate	30-39 minutes
99215	High	40-54 minutes

⚠️ Important Time Note

Time is calculated as total time on the date of encounter, including:

Preparing to see the patient (reviewing records)
Obtaining and documenting history and exam
Face-to-face time with patient/family
Counseling and educating patient/family
Ordering tests and procedures
Referring and communicating with other professionals
Documenting clinical information
Independently reviewing data

Time does NOT include: Travel time, teaching time unrelated to patient, or time spent by clinical staff.

The Three MDM Elements Explained

Medical Decision Making consists of three distinct elements. To qualify for a particular MDM level, you must meet or exceed requirements in TWO of the THREE elements.

Element 1: Number and Complexity of Problems Addressed (COPA)

This element evaluates the nature and number of diagnoses or conditions addressed at the encounter. Problems can range from self-limited minor problems to life-threatening acute illnesses.

Problem Categories:

Problem Type	Description	Examples
Minimal	Self-limited or minor problem	Cold, insect bite, tinea corporis
Low	2+ self-limited problems, OR 1 stable chronic illness, OR 1 acute uncomplicated illness/injury	Uncomplicated UTI, allergic rhinitis, controlled HTN
Moderate	1+ chronic illness with exacerbation, OR 2+ stable chronic illnesses, OR undiagnosed new problem with uncertain prognosis, OR acute illness with systemic symptoms, OR acute complicated injury	COPD exacerbation, uncontrolled diabetes, chest pain requiring workup, pneumonia
High	1+ chronic illness with severe exacerbation/progression/side effects of treatment, OR 1 acute or chronic illness posing threat to life or bodily function	Acute MI, respiratory distress, severe sepsis, diabetic ketoacidosis

 🔑 Key COPA Concepts
 Problems Addressed: Only count problems addressed at THIS encounter (evaluated, treated, or managed)
Stability Assessment: Physician/QHP determines if chronic illness is stable, worsening, or inadequately controlled
Not Just Diagnosis: "Problem" includes symptoms, abnormal test results, or clinical findings requiring evaluation
Final Diagnosis Not Required: Extensive evaluation may conclude symptoms don't represent significant pathology—complexity still counts

 

Element 2: Amount and/or Complexity of Data Reviewed and Analyzed

This element evaluates the data reviewed, ordered, or directly obtained to establish diagnosis and determine treatment plan. Data includes tests, documents, independent historians, and independent interpretation.

Data Categories and Point System:

Category 1: Tests, Documents, or Independent Historian(s)

Review of prior external note(s) from unique source = 1 point each source
Review of result(s) of unique test(s) = 1 point each unique test
Ordering unique test(s) = 1 point each unique test
Assessment requiring independent historian = 1 point

Category 2: Independent Interpretation

Independent interpretation of test performed by another physician/QHP = 2 points

Category 3: Discussion of Management or Test Interpretation

Discussion of management or test interpretation with external physician/QHP or appropriate source = 1 point

Data Scoring for MDM Levels:

MDM Level	Data Requirements
Minimal/None	Minimal or none
Limited	Limited (Must meet requirements of at least 1 of the 2 categories)
Moderate	Moderate (Must meet requirements of at least 1 of the 3 categories)
Extensive	Extensive (Must meet requirements of at least 2 of the 3 categories)

Example Data Scoring:

Provider reviews prior cardiologist notes (1 point), orders ECG (1 point), orders chest X-ray (1 point), and discusses findings with cardiologist (1 point).

Total: 4 points
Category 1: 3 points
Category 3: 1 point

Result: Meets MODERATE data requirement (at least 1 of 3 categories satisfied)

Element 3: Risk of Complications and/or Morbidity or Mortality

Risk assessment considers two factors: (1) the risk of the problem itself if left untreated, and (2) the risk associated with the proposed management or diagnostic procedures.

Risk Levels:

Risk Level	Description	Management Examples
Minimal	Minimal risk of morbidity from additional diagnostic testing or treatment	Rest, gargles, elastic bandages, superficial dressing
Low	Low risk of morbidity from additional diagnostic testing or treatment	OTC drugs, minor surgery with no identified risk factors, physical/occupational therapy
Moderate	Moderate risk of morbidity from additional diagnostic testing or treatment	Prescription drug management, 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
High	High risk of morbidity from additional diagnostic testing or treatment	Drug therapy requiring intensive monitoring for toxicity, decision regarding emergency major surgery, decision regarding hospitalization, decision not to resuscitate due to advanced disease, parenteral controlled substances

💡 Risk Assessment Tips

Context Matters: Same medication may represent different risk levels in different patients (e.g., anticoagulation in elderly vs. young adult)
Decision Point: Risk is determined at time of encounter—did the provider's decision involve significant risk?
Social Determinants: Moderate risk can be supported if social factors significantly limit diagnosis or treatment
Monitoring Requirements: Intensive monitoring (e.g., warfarin, chemotherapy) supports high risk

Four Levels of MDM

The CPT MDM Grid defines four levels of medical decision making. Remember: meet requirements in TWO of THREE elements to qualify for that MDM level.

Straightforward MDM

Problems: Minimal - 1 self-limited or minor problem
Data: Minimal or none
Risk: Minimal risk
Example Scenarios: Routine medication refill, simple rash, vaccine administration with brief assessment

Low MDM

Problems: Low - 2 or more self-limited/minor problems, OR 1 stable chronic illness, OR 1 acute uncomplicated illness/injury
Data: Limited - Category 1 OR Category 2
Risk: Low risk
Example Scenarios: Uncomplicated URI, simple UTI in otherwise healthy patient, follow-up for stable chronic disease

Moderate MDM

Problems: Moderate - 1 or more chronic illness with exacerbation, OR 2 or more stable chronic illnesses, OR undiagnosed new problem with uncertain prognosis, OR acute illness with systemic symptoms, OR acute complicated injury
Data: Moderate - Category 1, 2, OR 3
Risk: Moderate risk
Example Scenarios: COPD exacerbation, new chest pain requiring workup, uncontrolled diabetes with multiple medications, acute kidney injury

High MDM

Problems: High - 1 or more chronic illnesses with severe exacerbation/progression/side effects of treatment, OR 1 acute/chronic illness posing threat to life or bodily function
Data: Extensive - 2 of 3 categories (1, 2, OR 3)
Risk: High risk
Example Scenarios: Severe sepsis, diabetic ketoacidosis, acute MI, respiratory failure, advanced cancer with treatment decisions

Time vs. MDM: When to Use Each

Physicians can select E/M level based on EITHER total time OR medical decision making. Understanding when to use each method optimizes coding accuracy and reimbursement.

When to Use MDM

Complex decisions in short time: High MDM achieved in 30 minutes (could bill 99214 by MDM vs. 99213 by time)
Multiple problems requiring coordination: MDM captures cognitive work better than time alone
Data review and interpretation: Extensive chart review and external communication increases MDM
High-risk management decisions: Risk element drives MDM level effectively

When to Use Time

Counseling-heavy visits: Extensive education about diagnosis, treatment options, or prognosis
Care coordination: Significant time spent coordinating with other providers/facilities
Behavioral health discussions: Mental health counseling, substance use discussions
End-of-life planning: Goals of care discussions, advance directive counseling
Preventive counseling: Lifestyle modification, diet, exercise, smoking cessation

✅ Documentation Best Practice

Document BOTH MDM elements AND total time when possible. This gives you flexibility during code assignment and provides audit protection. Simply note: "Total time spent on date of encounter: 35 minutes" along with standard MDM documentation.

G2211: Visit Complexity Add-On Code

HCPCS code G2211 represents one of the most significant payment changes for primary care and longitudinal specialty care. Implemented January 1, 2024, and expanded January 1, 2025, G2211 recognizes the inherent complexity of ongoing patient relationships.

What G2211 Captures

G2211 compensates for the cognitive load and practice resources involved in:

Serving as the continuing focal point for all of a patient's healthcare services (primary care model)
Providing ongoing care for a patient's single, serious condition or complex condition
Building and maintaining longitudinal patient relationships
Coordinating care across multiple specialists and settings
Managing complexity beyond what's captured in standard E/M codes

 📋 G2211 Billing Requirements
 Add-on code: Must be reported WITH E/M office visit codes 99202-99215
Patient relationship: Provider must be focal point for all care OR managing single serious/complex condition on ongoing basis
Documentation: Medical record should reflect longitudinal relationship and visit medical necessity
No frequency limit: Can be billed at every qualifying visit
Both new and established patients: Can be used for new patient establishing care or established patients

 

2025 Modifier 25 Expansion

Effective January 1, 2025, CMS expanded G2211 payment to allow billing when the E/M service includes modifier 25 for certain preventive services:

Annual Wellness Visit (AWV)
Initial Preventive Physical Examination (IPPE)
Any Medicare Part B preventive service

This means primary care providers can now bill G2211 when providing separately identifiable E/M services on the same day as preventive care.

Clinical Scenarios for G2211

Primary Care Example:

Patient sees their PCP for acute sinus congestion. While seemingly simple, the provider must consider:
• Patient's medication adherence for chronic conditions
• Impact on upcoming specialist appointment
• Prevention of complications given patient's immunocompromised state
• Maintaining trust for future health decisions

Coding:
99213 - Office visit, established patient, low MDM
G2211 - Visit complexity add-on

Rationale: Provider serves as continuing focal point for all healthcare services.

Specialist Example:

Infectious disease physician sees established HIV patient for routine follow-up. Provider manages:
• Antiretroviral therapy optimization
• CD4 count monitoring
• Screening for opportunistic infections
• Adherence counseling
• Coordination with primary care

Coding:
99214 - Office visit, established patient, moderate MDM
G2211 - Visit complexity add-on

Rationale: Ongoing care for single, serious condition (HIV) with longitudinal relationship.

When NOT to Bill G2211

Discrete, episodic care: Single visit for specific problem without ongoing relationship
Routine consultations: Second opinion visits without expectation of continued care
Urgent care visits: One-time encounters without prior/future relationship
Telemedicine-only relationships: Without established longitudinal care

G2211 Payment

G2211 reimburses approximately $16 (varies by locality) per encounter. For a practice seeing 20 patients daily, 200 days per year, with G2211 appropriate for 50% of visits, this represents approximately $32,000 annually per provider.

G2212: Prolonged Services Add-On

HCPCS code G2212 captures prolonged office/outpatient E/M services that exceed the maximum time for the highest-level codes (99205 or 99215).

G2212 Requirements

Base code required: Must bill with 99205 or 99215 only
Minimum time threshold: At least 15 minutes beyond maximum time for base code
15-minute increments: Report G2212 for each additional 15 minutes
Total time calculation: Total time on date of encounter must be documented

Time Thresholds

Base Code	Base Time Range	G2212 Starts At
99205	60-74 minutes	75+ minutes (≥15 min beyond 60)
99215	40-54 minutes	55+ minutes (≥15 min beyond 40)

G2212 Reporting Examples

Example 1: 85 Minutes Total Time

Established patient visit for multiple chronic conditions, extensive counseling
Total time: 85 minutes

Coding:
99215 - Established patient visit (40 minutes base)
G2212 x 3 - Prolonged services (45 additional minutes = 3 units)

Calculation:
85 minutes total - 40 minutes base = 45 additional minutes
45 minutes ÷ 15 minutes per unit = 3 units of G2212

Example 2: 92 Minutes Total Time

New patient comprehensive evaluation with care coordination
Total time: 92 minutes

Coding:
99205 - New patient visit (60 minutes base)
G2212 x 2 - Prolonged services (32 additional minutes = 2 units)

Calculation:
92 minutes total - 60 minutes base = 32 additional minutes
32 minutes ÷ 15 minutes per unit = 2.13 → Report 2 units
(Do not round up unless ≥15 minutes achieved for that unit)

New Telehealth Codes (98000-98015)

The 2025 CPT code set introduced 17 new telemedicine E/M codes to replace outdated telephone E/M codes. These codes specifically capture synchronous (real-time) audio-video and audio-only services.

Synchronous Audio-Video Services (98000-98007)

These codes require real-time, interactive audio AND video telecommunication that is HIPAA-compliant.

New Patients (98000-98003)

Code	MDM Level	Time Range
98000	Straightforward	15-29 minutes
98001	Low	30-44 minutes
98002	Moderate	45-59 minutes
98003	High	60-74 minutes

Established Patients (98004-98007)

Code	MDM Level	Time Range
98004	Straightforward	10-19 minutes
98005	Low	20-29 minutes
98006	Moderate	30-39 minutes
98007	High	40-54 minutes

Synchronous Audio-Only Services (98008-98015)

These codes are for services conducted via real-time audio (telephone) only, when video is not available or patient declines video.

New Patients (98008-98011)

Code	MDM Level	Minimum Time
98008	Straightforward	15-29 minutes
98009	Low	30-44 minutes
98010	Moderate	45-59 minutes
98011	High	60-74 minutes

Established Patients (98012-98015)

Code	MDM Level	Minimum Time
98012	Straightforward	10-19 minutes
98013	Low	20-29 minutes
98014	Moderate	30-39 minutes
98015	High	40-54 minutes

Brief Virtual Check-In: Code 98016

New code 98016 replaces the Medicare-specific G2012 code for brief communication technology-based services:

Duration: 5-10 minutes of medical discussion
Modality: Audio-only OR audio-video
Patient type: Established patients only
Initiated by: Patient
Purpose: Determine if office visit is needed
Restrictions: Cannot be related to E/M within past 7 days or leading to E/M within next 24 hours

⚠️ Medicare Telehealth Exception

Medicare does NOT accept codes 98000-98015. For Medicare patients, continue using office/outpatient E/M codes (99202-99215) with modifier 95 (audio-video) or 93 (audio-only) as during the COVID-19 public health emergency. Check with individual commercial payers and Medicare Advantage plans regarding their acceptance of new telehealth codes.

Documentation Requirements

Proper documentation supports code selection and provides audit protection. The 2025 guidelines emphasize medically appropriate documentation over checkbox compliance.

Required Documentation Elements

Chief Complaint: Brief statement of reason for visit (required)
History: Medically appropriate history relevant to presenting problem
Physical Examination: Medically appropriate exam of affected body areas/organ systems
Medical Decision Making: Document all three MDM elements (problems, data, risk)
OR Time Statement: "Total time on date of encounter: [X] minutes"
Assessment and Plan: Diagnosis/impression and treatment plan
Signature: Provider signature/attestation

MDM Documentation Best Practices

Problems Addressed:

List all problems evaluated, treated, or managed at encounter
Indicate stability status of chronic conditions
Note progression, exacerbation, or complications
Include symptoms under investigation even without final diagnosis

Data Reviewed and Analyzed:

Specify external records reviewed (source and type)
List tests ordered (by name/type)
Note independent interpretation performed
Document discussions with other providers (name, specialty, content)
Identify use of independent historian when applicable

Risk Assessment:

Document management options considered
Note prescription medications started/changed
Indicate if surgery recommended/planned
Record decision-making around hospitalization
Identify drug therapy requiring intensive monitoring

✅ MDM Documentation Template

Problems Addressed:

1. Type 2 diabetes with hyperglycemia - chronic illness with exacerbation (A1C 9.2%, up from 7.1%)
2. Hypertension - stable chronic illness (BP 130/82)
3. Hyperlipidemia - stable chronic illness (on statin therapy)

Data Reviewed:

• Reviewed laboratory results: CBC, CMP, A1C, lipid panel (ordered today)
• Reviewed external records: Endocrinology note dated 12/15/24 from Dr. Smith
• Discussed management with Dr. Smith, endocrinology, regarding insulin adjustment

Risk:

Moderate risk - Prescription drug management with adjustment of insulin dosing; monitoring required for hypoglycemia

MDM Level: MODERATE (meets 2 of 3 elements for moderate MDM)

Real-World Coding Scenarios

Let's apply MDM concepts to realistic clinical scenarios:

Scenario 1: New Patient with Chest Pain

Clinical Documentation:

48-year-old male presents with 2 days of intermittent chest discomfort. PMH significant for HTN, hyperlipidemia, family history of early CAD. Medically appropriate history obtained including cardiac risk factors. Physical exam includes vital signs and cardiovascular/respiratory exam. ECG performed and interpreted - shows nonspecific T wave changes. Troponin ordered. External cardiology records from 2023 reviewed. Discussed case with cardiologist Dr. Jones regarding need for stress test vs. observation. Patient advised potential hospitalization if troponin positive.

Total encounter time: 52 minutes

MDM Analysis:
• Problems: Acute illness with systemic symptoms (chest pain requiring workup) - MODERATE
• Data: ECG (ordered/interpreted) = 2 points, troponin ordered = 1 point, external records reviewed = 1 point, discussion with cardiologist = 1 point. Category 1, 2, and 3 met - MODERATE to EXTENSIVE
• Risk: Moderate risk (decision regarding observation vs. admission) - MODERATE

MDM Level: MODERATE (all 3 elements meet moderate)

Code Selection:
99204 - New patient office visit, moderate MDM, 45-59 minutes

Alternative by Time: 52 minutes also supports 99204 (45-59 minute range)

Scenario 2: Established Patient Diabetes Follow-Up

Clinical Documentation:

62-year-old established patient with T2DM returns for routine follow-up. A1C today 7.1% (target <7%). Patient reports good medication adherence, no hypoglycemia. BP 128/78. Foot exam shows no neuropathy. Continue current metformin and glipizide. Discussed diet and exercise. Refilled medications. Reinforced importance of annual eye exam.

Total time: 18 minutes

MDM Analysis:
• Problems: 1 stable chronic illness (well-controlled diabetes) - LOW
• Data: A1C result reviewed (1 point) - LIMITED
• Risk: Low risk (OTC medications, no changes) - LOW

MDM Level: LOW (meets 2 of 3 for low: problems and risk)

Code Selection:
99213 - Established patient office visit, low MDM
G2211 - Visit complexity add-on (PCP is focal point for all patient care)

Alternative by Time: 18 minutes falls in 10-19 minute range = 99212 (straightforward). Use MDM for more accurate level.

Scenario 3: Complex Chronic Care Management

Clinical Documentation:

75-year-old established patient with CHF, COPD, T2DM, CKD stage 3. Presents with increased SOB and weight gain 8 lbs over 1 week. Appears volume overloaded. Reviewed recent cardiology echo (EF 35%, down from 45%). Reviewed pulmonology PFTs from last month. Called cardiologist to discuss diuretic adjustment and potential hospitalization. CXR ordered showing pulmonary congestion. Increased furosemide dose to 80mg BID, close follow-up arranged. Discussed goals of care given progressive disease. Patient prefers outpatient management if safe.

Total time: 42 minutes

MDM Analysis:
• Problems: 2+ chronic illnesses (CHF, COPD, T2DM, CKD) with 1 having exacerbation (CHF decompensation) - HIGH
• Data: Echo reviewed (external, 1 point), PFTs reviewed (external, 1 point), CXR ordered (1 point), discussion with cardiologist (1 point). Meets 2 of 3 categories - EXTENSIVE
• Risk: High risk (decision regarding hospitalization vs. home management, IV diuretics considered) - HIGH

MDM Level: HIGH (all 3 elements meet high)

Code Selection:
99215 - Established patient office visit, high MDM
G2211 - Visit complexity add-on (ongoing management of complex, serious conditions)

Scenario 4: Prolonged Visit with Care Coordination

Clinical Documentation:

Established patient with newly diagnosed metastatic lung cancer. Extensive counseling regarding treatment options (chemotherapy vs. palliative care), prognosis discussion, advance directive completion, referrals to oncology and palliative care. Contacted oncologist directly to expedite appointment. Reviewed CT scan images and pathology report. Provided emotional support to patient and spouse. Coordinated with social work for home health services.

Total time documented: 78 minutes

Code Selection by Time:
99215 - Established patient, high MDM (base code covers 40 minutes)
G2212 x 2 - Prolonged services (78 - 40 = 38 additional minutes = 2 units of 15 minutes each)
G2211 - Visit complexity add-on (ongoing management of single, serious condition)

Rationale: Counseling-intensive visit best captured by time. High MDM also present but time gives more accurate representation of work.

CPC Exam Tips

E/M coding questions appear throughout the CPC exam. Master these strategies for exam success:

1. Use the MDM Grid

CPT code book contains official MDM table - tab this page
For each scenario, systematically evaluate all three elements
Remember: TWO of THREE elements must meet level requirements
Write out your analysis: "Problems = Moderate, Data = Moderate, Risk = High → MODERATE MDM overall"

2. Identify Time vs. MDM Questions

If scenario provides total time but limited MDM detail → likely time-based
If scenario provides extensive clinical detail but no time → MDM-based
If both provided, determine which yields higher level (exam may test this choice)

3. Count Data Points Carefully

Create scratch paper system: Category 1 points | Category 2 points | Category 3 points
Each unique test = 1 point (don't count same test twice)
Each unique external source = 1 point
Independent interpretation = 2 points (but only if separately reported)
Discussion with external provider = 1 point

4. Assess Risk Contextually

Look for key phrases: "prescription drug," "decision regarding hospitalization," "intensive monitoring"
High-risk indicators: parenteral controlled substances, emergency surgery decisions, life-threatening illness
Moderate-risk indicators: prescription management, minor surgery with risk factors, social determinants limiting care

5. Know New Patient vs. Established

3-year rule: Must have had face-to-face service within 3 years to be "established"
Same specialty AND subspecialty in same group practice
New patient codes start at 15 minutes (99202); established at 10 minutes (99212)

6. Recognize G2211 Scenarios

Primary care provider = almost always qualifies
Specialist managing ongoing chronic disease = qualifies
One-time consultation = does NOT qualify
Urgent care visit = does NOT qualify

7. Practice Time Calculations

Know time ranges for 99202-99215 cold
G2212 threshold: 99215 = 55+ minutes; 99205 = 75+ minutes
Calculate units: (Total time - Base time) ÷ 15 = number of G2212 units

8. Watch for Telemedicine Details

Audio-video vs. audio-only → different code sets
Medicare exception: use 99202-99215 with modifiers, NOT 98000-98015
98016 requirements: 5-10 minutes, established patient, patient-initiated

Master E/M Coding with Practice Questions

Test your MDM skills with hundreds of realistic scenarios covering office visits, data analysis, risk assessment, and add-on codes.

Key Takeaways

Mastering E/M coding for 2025 requires understanding the shift toward Medical Decision Making and the flexibility between MDM and time-based coding:

MDM is primary: Three elements (problems, data, risk) with TWO of THREE meeting level requirements
Time alternative: Total time on date of encounter can determine code level instead of MDM
Simplified documentation: History and exam must be "medically appropriate" but don't determine code level
Office visit codes: 99202-99215 with MDM levels (straightforward, low, moderate, high)
G2211 expansion: Visit complexity add-on recognizes longitudinal relationships; payable with modifier 25 for preventive services starting 2025
G2212 for prolonged services: Report with 99205 or 99215 when time exceeds maximum by ≥15 minutes
New telehealth codes: 98000-98015 for audio-video and audio-only services (Medicare exception applies)
CPC exam focus: Practice MDM grid use, data counting, risk assessment, and time calculations

E/M coding represents the foundation of medical billing and a significant portion of CPC exam content. Invest time in understanding MDM elements, practice with realistic scenarios, and memorize time ranges for the most commonly used codes. Success in E/M coding translates directly to exam success and career competence.

📚 Additional Resources

CPT E/M Guidelines: Section beginning of E/M chapter in CPT code book
CMS E/M Services Guide: www.cms.gov E/M resources
AAPC E/M Resources: www.aapc.com
AMA E/M FAQs: Answers to common MDM questions on AMA website