Evaluation and Management codes are the most commonly billed and audited codes in medical billing. All of the core principles behind the changes made in 2021 regarding office visit coding are still very much intact. In 2026, however, there are certain specific yet significant changes to E&M Coding Guidelines that include the creation of codes related to remote physiologic monitoring, clarifications to MDM interpretation and documentation requirements, ICD-10-CM diagnostic changes that influence the codes selected, and CMS policy changes impacting coding under Medicare.
In this article, the key changes made to E&M Coding Guidelines are explained, analysed, and discussed.
The Core Framework Remains: MDM and Time
The core structure of E/M coding remains unchanged in 2026. The system was created back in 2021, where the codes for office/outpatient visits from 99202 to 99215 are chosen depending on whether Medical Decision-Making (MDM) or the total time spent by the provider is considered. This structure remains consistent throughout all major E/M codes.
Consultation codes (99242–99255) remain part of CPT, although Medicare generally does not reimburse them. Having a universal coding process within different settings was an intentional move that remains consistent in 2026.
Medical Decision Making: What 2026 Clarifies
2026 E/M coding guidelines further clarify how existing MDM criteria should be interpreted and documented. First, the guidance on the first component – problems addressed – has become stricter. According to the current guidance, the problem should be evaluated, treated, or managed. Having a long-term diagnosis mentioned in the history of a patient without discussing the issue at an appointment does not guarantee high-code assignment. Mentioning six different issues while actually treating only one of them is not sufficient.
Secondly, regarding stability, the latest guidance has provided clarification. A stable chronic illness is generally one that is adequately controlled or at treatment goal and not expected to worsen significantly. Failure to meet treatment goals may indicate that the condition is not fully stable, depending on the clinical context and physician documentation.
The Most Important Changes to E&M Coding Guidelines in 2026: RPM
The clearest examples of changes in coding in 2026 can be found in the field of RPM (Remote Physiologic Monitoring). In all, the 2026 edition of CPT includes 418 editorial changes to the current set of codes, among them 288 new codes, 84 code deletions, and 46 revised codes, with two new RPM codes added, and several others modified effective January 1, 2026.
The New Codes: 99445 and 99470
Before 2026, coding for RPM devices required at least 16 days of data transmission over a 30-day window, while RPM treatment management required at least 20 minutes of clinical time on a monthly basis. Such requirements left out many clinical scenarios, including discharge follow-ups, titration visits, and situations where patient non-compliance was an issue.
How the New RPM Code Family Functions
The 2026 RPM code set comprises new guidance, a coding table based on time, and updated parenthetical statements describing how codes are supposed to work together. The major rules are as follows:
- Device supply – 99445 is intended for scenarios involving 2–15 days of transmitted physiologic data; bill 99454 if data transmission occurs for at least 16 days. These codes are not compatible, and only one can be submitted per month of monitoring.
- Treatment management – 99470 was introduced to capture shorter-duration RPM treatment management services; bill 99457 after reaching the 20-minute mark. Current guidance indicates that 99470 is intended as an alternative to 99457 rather than a companion code.
- CPT 99453 (which includes setting up the technology and educating patients) has also been updated to comply with the new structure.
CMS and the AMA RUC may revisit valuation and utilisation data for newer RPM services in future rulemaking cycles. Meanwhile, practices should use the current CMS fee schedule values for planning purposes while monitoring future rulemaking updates.
Documentation Requirements for RPM
When more practices are allowed to use RPM billing, there would be increased documentation requirements. The practice needs to comply with the following:
- Logs showing the particular days that data was received from the device, rather than simply documenting that the monitoring process took place
- The total time for every billing period, including the dates, names of staff members, and total time
- The necessary real-time interactive communication, which means that merely using texts, voicemails, and manually transferring data does not suffice
- The medical necessity of monitoring in the program
- For practices also conducting CCM or BHI programs in addition to RPM billing, conflicting codes must be identified.
CMS Policy Updates: The 2025 E/M Booklet and What It Means for 2026
In September 2025, CMS released an updated Evaluation and Management Services booklet through its Medicare Learning Network. Despite having been issued before the plan year for 2026, the guidance will have implications for how Medicare approaches E/M documentation and coding, which will then influence private payers as well.
G2211: The Complexity Add-On
The guidance provides clarification regarding one of the most commonly misconceived issues concerning recent changes to E/M billing: the use of HCPCS add-on code G2211, which is intended to capture the complexity involved in longitudinal care and care coordination within the scope of primary care practices and other comparable settings.
E/M Visits With Minor Procedures
This guidance updates CMS's policy on billing E/M visits that are furnished on the same day as minor procedures. CMS uses intravitreal injections as an example to clarify that when minor procedures are performed on the same day, an E/M visit may only be billed separately if it represents a significant and separately identifiable service, reported with modifier 25.
ICD-10-CM Changes That Feed into E/M Code Selection
Specificity in diagnoses leads to a more accurate documentation of risks, morbidity, and complexities involved, thereby proving the necessity of selecting a particular E/M service level. Nonspecific codes are a red flag in an auditor's eyes since they do not tell the story that needs to be told. Main additions to the 2026 ICD-10-CM list:
- Injury and poisoning: codes for contusions, lacerations, punctures, and open bite wounds provide much-needed specificity
- Diseases of the musculoskeletal system and connective tissue: codes that cover many commonly encountered chronic conditions
- Diseases of the nervous system and mental health disorders: new codes that assist with documenting complexity in primary care and psychiatric visits
- Complications, comorbid conditions: codes that allow for better documentation of morbidity and complications risk, one of the three MDM elements
The bottom line is that ICD-10-CM codes used should reflect the current status in medical coding literature.
Implications for Coders and Clinical Teams
Risk Audits Continue
E/M services remain among the most frequently audited areas in Medicare claims review. The requirement for an actively managed issue to trigger coding means the audits will focus on the validity of the documentation in relation to the code selected rather than the accuracy of the coding process itself. A thorough assessment and plan remain important safeguards during coding audits.
MDM Training Is Crucial
The change in the coding paradigm occurred in 2021, but there are many healthcare providers and coders who have yet to master the nuances of selecting codes based on the MDM table. The refinements made in the MDM tables for stability, problems, and risk are just enough to warrant additional training. Quick-reference tip sheets integrated within the EHR systems will work better than stand-alone courses to ensure accurate coding practices.
RPM May Expand Reimbursement Opportunities
For offices that care for patients suffering from chronic diseases such as hypertension, diabetes, heart disease, and COPD, the availability of the new RPM code family presents itself as a real opportunity. For those who did not bill in the past due to a lack of codes available to represent their short-term monitoring visits or less than 20 minutes of patient management time, RPM allows for a solution.
The 2026 E/M coding landscape is one of refinement rather than revolution. The MDM-and-time framework that replaced the old history-and-physical model remains intact. The major new developments are in remote physiologic monitoring, where two new codes have materially expanded what practices can bill, and in ICD-10-CM, where hundreds of new diagnosis codes require updated coding references across the board. Maintaining current knowledge of E/M, RPM, and ICD-10-CM updates remains essential in 2026.
FAQs
Is there any update in the basic E/M coding guidelines in 2026?
No. The existing E/M code structure has not been updated, which means that the MDM-or-time choice criteria established in 2021 remain relevant in 2026. Office/outpatient visit codes 99202 through 99215 should still be determined by using the medical decision-making process or time spent by the provider on the day of the patient encounter.
How much data transmission is the minimum required for the new RPM code 99445?
CPT 99445 necessitates a minimum of two days of physiologic data transmission during 30 days. 99445 was developed for the reimbursement of RPM episodes with 2-15 days of physiologic data transmission during 30 days. A single device supply code can only be reported for each monitoring period.
Can G2211 be coded along with the modifier 25 on the same claim?
Yes, if documentation supports the requirement. In some cases, yes. The Centre for Medicare & Medicaid Services (CMS) allows reporting of G2211 with modifier 25 when supporting documentation confirms the need for a complex level of continuous care and related services billing on the same claim.
Would having multiple diagnoses listed in the note mean a more complex code?
No. This aspect was clarified by the new 2026 guidance. It says that a condition should be assessed, managed, or treated for it to count as adding MDM complexity. In such a case, a note listing six problems but managing only one cannot qualify for high-complexity coding.
Are the RPM codes of 2026 applicable to commercial payers besides Medicare?
This is not true. Simply because CMS decides to adopt a code, it doesn't necessarily mean that commercial payers will start using the code immediately or at all. Physicians should check with individual payers before billing for 99445 and 99470 services among non-Medicare carriers.
