๐ In This Article
E/M Coding Overview
Evaluation and Management (E/M) codes are the most frequently billed codes in any outpatient practice โ and the most audited. The 2021 revisions eliminated element-counting in favor of complexity-based coding, and understanding this framework is essential for accurate billing.
The Two Methods for Selecting E/M Level
Under current guidelines, you select E/M level using either: (1) Medical Decision Making (MDM) complexity, or (2) Total Physician Time on the date of encounter. You use whichever method supports the higher level.
MDM Levels: What Each Requires
| E/M Level | MDM Level | Problems Addressed | Data | Risk |
|---|---|---|---|---|
| 99202/99212 | Straightforward | Self-limited/minor | Minimal | Minimal |
| 99203/99213 | Low | 1 stable chronic condition | Limited | Low |
| 99204/99214 | Moderate | 1 chronic condition + | Moderate | Moderate |
| 99205/99215 | High | 1 severe/complex condition | Extensive | High |
Using Time to Select E/M Level
Total time includes face-to-face time PLUS same-day work: reviewing records, ordering tests, communicating results, writing notes, care coordination. Document total time explicitly in your note when using time-based coding.
Most Common E/M Errors in 2025
- Still using element-counting (history bullets, exam bullets) from old guidelines
- Not documenting total time when using time-based coding
- Upcoding to 99215 without documenting high-complexity MDM
- Not using add-on code 99417 for prolonged services over time thresholds
How a Virtual Coder Prevents E/M Errors
Our coders review clinical documentation and select the correct E/M level based on the content of each note โ not assumptions. Regular audits identify patterns and we provide provider feedback to improve documentation quality.
Accurate E/M Coding That Maximizes Your Revenue
CPC-certified coders who know E/M guidelines inside and out.
Hire a Coder โ