When should you use modifier 25, and when will it be denied?
Use modifier 25 on the E/M code when the same provider did a significant, separately identifiable evaluation and management service on the same day as a procedure or other service. It is denied when the note shows only the decision to do the procedure, or when it sits on the wrong line.
Written by Salman Saeed, CEO and Co-Founder · Reviewed by a Certified Medical Coder · 
In short: modifier 25 comes down to four questions: same provider and day, which kind of procedure, extra documented work, and medical necessity on its own. Medicare does not require a different diagnosis, and the note carries the proof.
What four questions decide whether modifier 25 belongs on the E/M?
Run the same four questions on every visit that has a procedure or another service on the same date. If any answer is no, the E/M line goes out without the modifier or does not go out at all.
- Same provider, same patient, same date? Medicare requires modifier 25 only when the same physician or qualified nonphysician practitioner bills both.
- Is the other service a minor procedure or an XXX procedure? Look up the global period in the fee schedule file. A 000 or 010 day indicator means a minor procedure, XXX means the global surgery rules do not apply, and 090 means major surgery, which takes modifier 57 instead.
- Does the note show work beyond the decision to do the procedure and the procedure's own routine work? This is the question that decides most denials.
- Would the E/M have been medically necessary if the procedure had not happened? If the visit only exists to set up the procedure, there is nothing to bill separately.
The Medicare Claims Processing Manual, chapter 12, section 30.6.6 B, says modifier 25 goes on the E/M code on the claim, never on the procedure, and that different diagnoses are not required. The modifier 25 code page holds the definition. This post is about deciding, line by line, and proving it.
Which same-day pairings usually support modifier 25?
Six pairings come up most often in a primary care or specialty office. The table shows what the NCCI Policy Manual says about each.
| Same-day service | Modifier 25 on the E/M? | What the note has to show |
|---|---|---|
| Minor procedure, such as a joint injection (20610, global 000) or destruction of a precancerous skin spot (17000, global 010) | Yes, if the E/M is significant and unrelated to the decision to do the procedure | A second problem, or evaluation and management beyond the decision to treat. The same diagnosis is allowed |
| Procedure with an XXX global indicator, such as a stress test (93015) | Possible | Work above the procedure's own routine work. It may share the diagnosis but cannot include inherent work, supervision of others or time interpreting the result |
| Immunization administration (90460 to 90474) | Yes, if the E/M is significant and separately identifiable | Evaluation work that stands apart from giving the vaccine. A return visit solely for another immunization bills the administration code alone |
| Screening Pap specimen collection (Q0091) | Yes, if the E/M evaluates other medical problems | A separate problem. An E/M done solely to collect the specimen is not separately reportable |
| Drug administration in a non-facility office (96360 to 96379) | Yes, for E/M codes other than 99211 | A significant, separately identifiable evaluation. 99211 is not separately reportable with drug administration, with or without modifier 25 |
| E/M on the day of or the day before major surgery (global 090) | Not 25. Use 57 for the visit that led to the decision for surgery | Documentation that this visit decided the surgery. Other pre-operative E/M that day is inside the global package |
A facility E/M code such as 99285 has its own limit. The NCCI manual says a facility-based E/M code (99281 to 99285) shall not be reported with a drug administration code unless the drug administration happened at a separate patient encounter in a non-facility setting on the same date. For ED and critical care on one date, read can you bill 99285 and 99291 on the same day.
What does a defensible note look like?
Write the E/M part and the procedure part as two separate pieces of the record. Medicare says both the E/M and the procedure must be appropriately and sufficiently documented, even though the note is not sent with the claim.
The E/M piece should stand on its own if you cut the procedure out of the chart. It needs its own reason for the visit, the history and exam that relate to it, the assessment, and a plan that is not just the procedure.
An established patient comes in for a knee injection already planned at the last visit. During the visit she also reports a new, worsening cough, and the provider takes a history, examines her chest, orders a test and starts treatment. Made-up allowed amounts are $90 for the E/M and $60 for the injection.
Two habits make the E/M easy to defend. Give the separate problem its own assessment line in the note. And avoid a copied exam template on every injection visit, because it hides the work that was specific to this patient and this date.
The fact that the patient is new is not enough. The NCCI manual says a new patient status is not sufficient alone to justify an E/M on the same date as a minor procedure.
Why does a claim with modifier 25 still get denied?
Most denials come from one of four causes: the modifier is missing, it sits on the wrong line, the note does not support a separate service, or the provider's use pattern drew a review. X12 defines the codes below.
| What you see | Likely cause | What to do |
|---|---|---|
| CARC 97 on the E/M line | The benefit is included in the payment for another service already adjudicated. Often the modifier was missing | Check the claim. If the note supports a separate service, send a corrected claim with 25 |
| CARC 4 | The procedure code is inconsistent with the modifier used. Often 25 sits on the procedure line | Move 25 to the E/M code |
| CARC 236 | The pair is not compatible under the National Correct Coding Initiative | Confirm the edit allows modifiers in your payer's file; do not add one only to bypass the edit |
| Records request or prepayment screen | The MAC found high use of modifier 25 compared with peers | Pull the notes for the flagged dates; expect to prove each one |
Chapter 12 says a MAC that finds high use, reviews records case by case and educates the provider may then impose prepayment screens or documentation requirements. It also says a MAC may not let modifier 25 generate payment for multiple E/M services on one day by the same physician. The NCCI edits rule explains how the pair files work, and the file itself needs an AMA license click-through, so check the pair there before you rely on a modifier.
When is 25 the wrong modifier?
- Modifier 24 is for an unrelated E/M during a postoperative period. The NCCI manual reserves it for a visit unrelated to the diagnosis of the procedure, unless the problem is a complication of the surgery.
- Modifier 57 is for the visit that decided on major surgery on the day of or the day before the procedure.
- Modifier 59 never goes on an E/M. The Medicare Learning Network fact sheet on 59 and the X modifiers says to see modifier 25 for a separate and distinct E/M with a non-E/M service. The 59 versus XE, XS, XP and XU post covers the procedure side.
For the laceration, splint and injection cases that urgent care sees every day, the urgent care procedures post walks the code list. Family medicine and primary care visits follow the same rules, with immunizations and screening services added; see the family medicine billing page.
How Nucleus Align handles it
Our medical coding team includes AAPC and AHIMA certified coders, and we work denials within 48 hours. Book a call and we will review a sample of your E/M claims with modifier 25 against the notes, or see more on the blog.
- Medicare Claims Processing Manual, chapter 12, section 30.6.6 · CMS
- NCCI Policy Manual for Medicare Services, 2026 (chapters I, XI, XII) · CMS
- Proper Use of Modifiers 59, XE, XP, XS & XU (MLN1783722) · CMS MLN
- Physician Fee Schedule relative value files (RVU26D) · CMS
- Claim adjustment reason codes · X12
We check every rule, code and deadline against the official source. See our editorial policy.
Common questions
Straight answers from the team that does the work.
Ask a billing lead directly. A 20-minute call, Monday to Friday, 9am to 5pm Eastern.
01When should you use modifier 25?
Use it on an E/M code when the same provider did a significant, separately identifiable E/M service on the same day as a procedure or other service, beyond the procedure's own routine work. Medicare does not require a different diagnosis. The note has to show the extra work, not only the decision to do the procedure.
02Do I need a different diagnosis to use modifier 25?
No. The Medicare Claims Processing Manual says different diagnoses are not required, and the NCCI manual says the E/M and a minor procedure do not need different diagnoses. The E/M may relate to the same condition. What it cannot include is work that belongs to the procedure itself.
03Can modifier 25 go on a procedure code?
Not for Medicare. Chapter 12 of the Claims Processing Manual says modifier 25 should only be used on E/M services and is added to the E/M code on the claim. Putting it on the procedure line can trigger a CARC 4 denial because the code is inconsistent with the modifier.
04Is a new patient enough to bill an E/M with a minor procedure?
No. The NCCI Policy Manual says the same rules apply when a minor procedure is performed on a new patient, and that being new to the provider is not sufficient alone to justify an E/M on the same date. The note still has to show a significant, separately identifiable service.
Talk to a billing lead.
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