Modifier 25 in medical billing is used when a physician or other qualified healthcare professional provides a significant, separately identifiable Evaluation and Management (E/M) service on the same day as another procedure or service.
The key word is separate. The E/M work must go beyond the normal evaluation already included in the procedure. Modifier 25 does not make an otherwise bundled visit payable simply because it is added to the claim.
For 2026, CMS continues to require that the clinical facts and medical record support the modifier. Different diagnosis codes are not required. Modifier 25 is placed on the E/M code, not on the procedure code.
What Is Modifier 25 in Medical Billing?
Modifier 25 tells the payer that a same-day E/M service was significant and separately identifiable from another procedure or service performed during that date of service.
A simple way to think about it is:
If the procedure were removed from the encounter, would the documented E/M work still support a medically necessary, reportable E/M service?
If yes, modifier 25 may be appropriate. If the documentation only shows the normal assessment, consent, preparation, or follow-up work needed to perform the procedure, a separate E/M service usually is not supported.
Modifier 25 Rules for 2026
CMS’s 2026 Medicare NCCI Policy Manual provides several core rules practices should understand before billing modifier 25.
| Rule | What It Means |
|---|---|
| Modifier 25 belongs on the E/M code | Do not append modifier 25 to the procedure code. |
| The E/M must be significant and separately identifiable | The work must go beyond what is normally included in the other service. |
| The services occur on the same date | The E/M and the other procedure or service are reported for the same date of service. |
| A different diagnosis is not required | The E/M and procedure may involve the same condition when the separate E/M work is supported. |
| Documentation must support the E/M | The chart must support the medical necessity and level of the E/M service reported. |
| A modifier cannot be used just to bypass an edit | The clinical circumstances must actually meet the modifier requirements. |
CMS also states that minor surgical procedures with 0- or 10-day global periods contain normal pre-procedure, procedure, and post-procedure work. That work should not be separated into another E/M claim simply by using modifier 25.
Modifier 25 Documentation Requirements
Documentation is what makes modifier 25 defensible.
The note should allow another coder, auditor, or payer reviewer to understand what additional E/M work occurred and why it was medically necessary.
Document the Reason for the E/M Service
Clearly identify the problem or concern that required evaluation and management. Avoid relying on vague language that does not show why separate work was needed.
Show the Work That Was Separate From the Procedure
The note should show the assessment, medically appropriate examination when performed, medical decision-making, management, or other work supporting the reported E/M service.
Do not count work that is already part of performing the procedure as though it were a separate E/M service.
Support the E/M Level Reported
Modifier 25 does not change the normal E/M coding requirements.
If an office or outpatient E/M level is selected based on medical decision-making or time, the record must still meet the applicable requirements for that level.
Make the Two Services Easy to Identify
A separate note is not automatically required. However, organizing documentation so that the problem-oriented E/M work and the procedure work are easy to distinguish can make the claim easier to defend.
Keep Documentation Available for Review
A payer may request the record during prepayment review, post-payment review, an appeal, or an audit. Your chart should support the modifier before the claim is submitted.
Modifier 25 Documentation Checklist
- Reason for the separate E/M service is clear.
- Medical necessity is documented.
- The E/M work goes beyond normal procedure-related work.
- The E/M level is supported.
- The procedure is documented separately enough to identify its work.
- Diagnosis coding matches the documented conditions.
- Modifier 25 is attached to the E/M code.
- The services occurred on the same date.
- Applicable payer and NCCI rules have been checked.
Modifier 25 Examples
Example 1: Appropriate Use — Minor Procedure Plus Separate Problem
A patient arrives for a planned knee injection. During the visit, the patient reports a new rash. The physician separately evaluates the rash, documents relevant findings, assesses the problem, and creates a treatment plan.
Possible result: The injection is reported normally. If the separate rash evaluation meets E/M requirements, the appropriate E/M service may be reported with modifier 25.
Example 2: Not Appropriate — Routine Assessment Before a Procedure
A patient arrives for a planned knee injection. The provider confirms the knee symptoms, checks information needed to safely perform the injection, discusses the procedure, and gives the injection.
Possible result: Do not report a separate E/M service merely for the normal work associated with the planned procedure.
Example 3: Same Diagnosis Can Still Qualify
A patient presents after a head injury with a laceration. The provider performs a separate neurological assessment because of the injury and also repairs the wound.
Possible result: If the neurological E/M work is significant, medically necessary, separately identifiable, and documented at the appropriate level, the E/M may qualify for modifier 25 even though the services relate to the same injury.
Example 4: Preventive Visit Plus Problem-Oriented Care
A patient comes for preventive care. During the encounter, the physician also evaluates a worsening chronic condition, changes management, and documents a separate problem-oriented E/M service.
Possible result: Report the preventive service and, when supported, the problem-oriented E/M code with modifier 25.
Example 5: Preventive Visit With a Minor Finding
A small, uncomplicated issue is mentioned during a preventive visit and requires no meaningful additional evaluation or management.
Possible result: A separate problem-oriented E/M service generally should not be added simply because the issue appears in the note.
Example 6: Decision for Major Surgery
A physician performs an E/M service and makes the initial decision that the patient needs a major operation.
Possible result: Review the requirements for modifier 57. Modifier 25 is not the modifier used merely to report the initial decision for major surgery.
Modifier 25 and G2211 in 2026
Medicare practices should also understand the relationship between modifier 25 and HCPCS code G2211.
Under current CMS policy, G2211 generally is not payable when its office or outpatient E/M base code is reported with modifier 25. However, CMS allows specific exceptions when the same practitioner provides the qualifying E/M service on the same day as an Annual Wellness Visit, vaccine administration, or certain Medicare Part B preventive services.
This is a Medicare-specific rule. Do not apply Medicare’s G2211 policy to every commercial payer without checking that payer’s requirements.
Modifier 25 vs. Modifier 57, 24 and 59
| Modifier | Main Purpose | Key Difference |
|---|---|---|
| 25 | Significant, separately identifiable same-day E/M service | Used on an E/M service when additional E/M work occurs with another procedure or service. |
| 57 | Initial decision for major surgery | Used when the E/M results in the initial decision to perform major surgery. |
| 24 | Unrelated E/M during a postoperative period | Addresses an unrelated E/M service during another procedure’s postoperative period. |
| 59 | Distinct procedural service | Applies to qualifying non-E/M procedural services, not as a replacement for modifier 25. |
Choosing the wrong modifier can create a claim edit even when the underlying services were medically necessary. Always match the modifier to what actually happened during the encounter.
Does Modifier 25 Require a Different Diagnosis?
No. CMS states that the E/M service and the same-day procedure may involve the same diagnosis or different diagnoses.
A separate diagnosis may make the services easier to understand when the patient truly has different conditions, but it is not a requirement for modifier 25.
Never select an inaccurate diagnosis simply to separate the claim lines. Diagnosis codes should reflect the patient’s documented conditions.
Common Modifier 25 Billing Mistakes
- Putting modifier 25 on the procedure instead of the E/M service.
- Using modifier 25 for every E/M and procedure performed on the same day.
- Billing routine pre-procedure work as a separate E/M service.
- Assuming a new patient automatically supports a separate visit.
- Using a second diagnosis as the only reason for modifier 25.
- Adding modifier 25 merely to bypass an NCCI edit.
- Failing to support the selected E/M level.
- Using modifier 25 when modifier 57 better describes the initial decision for major surgery.
- Ignoring payer-specific claim-editing policies.
- Failing to review recurring modifier-related denials.
Why Modifier 25 Claims Get Denied
A modifier 25 claim can still be denied. The modifier communicates the circumstances of the claim; it does not guarantee payment.
Common problems include documentation that does not show separate E/M work, an unsupported E/M level, an incorrect modifier position, a payer-specific edit, or a service combination that does not qualify for separate payment.
A bundling-related remittance may use CARC 97, while other coding problems can produce different adjustment or remark codes. Do not assume modifier 25 is the solution simply because a service was bundled.
Review the full remittance, payer policy, coding edits, medical record, and original claim. Physician Cure’s guide to common medical billing denial codes explains how to read common CARCs and determine whether a claim needs correction, appeal, or another action.
How to Prevent Modifier 25 Denials
- Start with the chart. Determine whether a truly separate E/M service occurred.
- Check the procedure’s global status. Understand what work is already included.
- Confirm the E/M level. Make sure the documentation supports the reported service.
- Check NCCI edits. Never use a modifier simply because an edit exists.
- Review payer rules. Medicare and commercial payer policies may differ.
- Place modifier 25 correctly. Append it to the qualifying E/M service.
- Track denial patterns. Repeated modifier denials usually point to a workflow, coding, or documentation problem.
Why Modifier 25 Deserves Extra Attention in 2026
Modifier 25 remains an important compliance area because same-day E/M and procedure claims continue to receive federal review.
HHS Office of Inspector General audits have examined whether E/M services billed on the same date as minor procedures were properly supported. In 2026, OIG also listed an active review involving Medicare E/M claims paid on the same day as minor surgery without modifier 25.
This does not mean practices should avoid modifier 25 when it is correct. Underbilling a legitimate separate E/M service can also result in lost reimbursement. The goal is accurate billing that matches the medical record.
Should You Appeal a Modifier 25 Denial?
Not every denial should be appealed.
First determine why the payer denied the line. If the original claim contained an error, a corrected claim may be appropriate. If the claim was correct and the documentation supports a significant, separately identifiable E/M service, review the payer’s reconsideration or appeal process.
Do not add modifier 25 after a denial unless the original medical record and billing circumstances actually support it.
When Should a Practice Audit Modifier 25 Usage?
Consider a focused coding review when your practice sees repeated same-day E/M denials, frequent modifier 25 use, inconsistent provider documentation, unusual payer requests for records, or uncertainty about which services are bundled.
A medical coding audit can compare claims with the underlying documentation and identify whether modifier errors come from provider notes, coding decisions, claim edits, or payer-specific workflows.
Get Help With Modifier 25 Billing and Coding
Correct use of modifier 25 in medical billing starts with one question: did the patient receive a significant, separately identifiable E/M service beyond the work already included in the other procedure or service?
If the answer is yes, the documentation must show it. If the answer is no, adding modifier 25 simply to obtain separate payment can create compliance and denial risk.
Practices dealing with repeated modifier denials or coding uncertainty can use Physician Cure’s medical billing and coding services for coding review, NCCI edit checks, claims management, denial follow-up, and revenue-cycle support.
If you want to review a recurring coding or denial problem, contact Physician Cure for a consultation.
Frequently Asked Questions About Modifier 25
What is modifier 25 in medical billing?
Modifier 25 identifies a significant, separately identifiable E/M service provided on the same day as another procedure or service. The E/M work must go beyond the normal work already included in the other service.
Does modifier 25 go on the E/M code or procedure code?
Modifier 25 is appended to the qualifying E/M code, not the procedure code.
Does modifier 25 require a different diagnosis?
No. CMS allows the E/M service and procedure to involve the same or different diagnoses. The medical record must show that the E/M service was significant and separately identifiable.
Can modifier 25 be used with a minor procedure?
Yes, when a significant and separately identifiable E/M service occurs in addition to the normal work of the minor procedure. Medicare generally treats procedures with 0- or 10-day global periods as minor surgical procedures for this purpose.
Can modifier 25 be used for a planned procedure?
Not merely because the provider evaluates the patient before performing the planned procedure. Routine work needed to perform a minor procedure is generally included in the procedure. A separate E/M service requires additional medically necessary work.
What is the difference between modifier 25 and modifier 57?
Modifier 25 applies to a significant, separately identifiable same-day E/M service. Modifier 57 generally identifies the E/M service that results in the initial decision to perform major surgery.
What is the difference between modifier 25 and modifier 59?
Modifier 25 is used with qualifying E/M services. Modifier 59 is used in appropriate situations to identify distinct non-E/M procedural services. They are not interchangeable.
Can modifier 25 be billed with an Annual Wellness Visit?
For Medicare, a medically necessary problem-oriented office or outpatient E/M service may be reported with an Annual Wellness Visit when the additional E/M work is significant and separately identifiable. Modifier 25 is appended to the additional E/M code.
Does modifier 25 guarantee payment?
No. The payer may review coding, medical necessity, documentation, NCCI edits, coverage rules, and its own payment policy. Modifier 25 must be supported by the actual services documented.
What documentation supports modifier 25?
The record should show why the additional E/M service was medically necessary, what separate evaluation and management work occurred, and that the documentation supports the E/M level reported.
