Healthcare providers work tirelessly to prioritize patient health and well-being. They opt for surgeries and other medical procedures, but what happens if the procedure cannot be completed for some reason, especially after anesthesia has already been administered?
This is where medical billers rely on modifier 74.
Using this modifier under suitable circumstances safeguards your facility’s right to collect reimbursement for the resources used. But how does “appending” this modifier work? Read on for a detailed breakdown.
Modifier 74 – Description
According to the American Medical Association (AMA) CPT codebook description, as referenced by the American Academy of Professional Coders (AAPC), the modifier is defined as:
“Discontinued Outpatient Hospital/Ambulatory Surgery Center (ASC) Procedure After Administration of Anesthesia.”
This modifier is used when a procedure is terminated after anesthesia has been administered or after the procedure has begun, due to circumstances that threaten the patient’s well-being.
For instance, if anesthesia has been administered and an incision is made, an intubation started, or even a scope inserted, the physicians must report the intended service CPT code and append modifier 74 to it when they discontinue the service.
But why do physicians reserve the right to collect reimbursement even though the procedure was left incomplete? This is because a surgical procedure costs high amounts in a facility setting, because of the cost of the:
- Room
- Preparation
- Staffing
- Supplies
- Equipment
Medical teams charge for these ancillary services whether or not the surgery was completed, as resources were still used.
What Counts as Anesthesia?
If you are dealing with billing in the hospital outpatient department or an Ambulatory Surgical Center (ASC), you need to understand what qualifies as anesthesia.
According to the Medicare Claims Processing Manual, Chapter 4, Section 20.6.4, anesthesia includes:
- Local anesthesia
- Regional blocks
- Moderate (conscious) sedation
- Deep sedation
- General anesthesia
Note that modifier 74 is not limited to general anesthesia. Even local or moderate sedation qualifies if administered before the procedure is discontinued.
Who Can Use Modifier 74?
The most important note when appending the 74 modifier is that it is a facility-specific modifier. This means it can be used by outpatient hospitals and ASCs for facility/institutional billing.
If a physician uses it for professional services billing, it will be incorrect. He must instead report a discontinued procedure with the modifier 53.
According to the guidance provided by AAPC, modifiers 73 and 74 are invalid for physician claims, and appending them to physician services results in a denial. So, modifier 74 is facility-only, meaning it is used exclusively by:
- Outpatient hospital departments (HOPDs)
- Ambulatory surgical centers (ASCs)
Scenarios Where Modifier 74 is Applicable
The following clinical scenarios represent the appropriate usage of modifier 74.
Intraoperative Hemodynamic Instability
Consider the case of a 35-year-old patient in an outpatient hospital who is brought to the operating theatre. The patient is scheduled for a laparoscopic cholecystectomy.
Therefore, he is fully prepared and moved to the procedure room. The anesthesiologist administers the general anesthesia.
However, a little after the surgical incision is made, the patient experiences a severe drop in blood pressure. He does not respond to initial resuscitative methods, so the surgeon stabilizes the patient by terminating the procedure and preparing for emergent transfer.
Since the surgeon discontinued the procedure after anesthesia administration (mid-procedure), modifier 74 will be appended to the CPT code for facility claim reimbursement.
Anaphylaxis Following Sedation Administration
Say a 46-year-old female patient presents at an ASC for a routine diagnostic colonoscopy. The procedure begins with intravenous (IV) propofol being administered with moderate sedation, according to protocol.
However, shortly after the administration, the patient exhibited signs of acute onset of urticaria, rapid fall in blood pressure, and bronchospasm. Suspecting anaphylaxis, the anesthesiologist stops the procedure plan and switches to emergency management.
During management, IV epinephrine is administered along with airway support to stabilize the patient. Finally, the colonoscopy is terminated.
In this scenario, the patient received anesthesia before the procedure cancellation. Thus, the facility claim appropriately includes the procedure CPT code along with modifier 74.
Intraoperative Cardiac Arrhythmia During Arthroscopic Knee Surgery
Imagine a 62-year-old female patient at an ASC who appears at the facility for an elective arthroscopic partial meniscectomy. For this procedure, the patient is given general anesthesia and positioned accordingly.
However, soon after scope placement, the anesthesiologist identifies the onset of ventricular tachycardia during monitoring. Therefore, the surgeon immediately withdraws the scope to terminate the procedure.
The surgical team opts for the Advanced Cardiac Life Support (ACLS) protocol to stabilize the patient. After the patient is stable, she is transferred for urgent cardiac evaluation and care.
According to the Medicare Claims Processing Manual, Chapter 14 (ASC), if facility resources are consumed similar to a complete procedure, the facility will receive full reimbursement. Hence, the billing team appends modifier 74 to the procedural code on form UB-04 for reimbursement.
Modifier 74 – Billing Guidelines to Follow
Accurate billing for modifier 74 is not limited to reporting the right modifier. The following guidelines describe when and how to apply it correctly.
Meet the Eligibility Criteria
Medical billers must ensure the following conditions are met before appending modifier 74 to a procedure code.
- The procedure was performed in an ASC setting or an outpatient hospital.
- Patient preparation for the procedure was complete, and the patient was taken to the surgery room.
- The procedure was initiated, or a suitable anesthesia was administered to the patient, before termination.
- The procedure was cancelled due to a threat to the patient’s well-being.
Report Only One Code per Date of Service
According to the Centers for Medicare & Medicaid Services (CMS), modifier 74 applies to one procedure code per service date (maximum). If multiple procedures are planned and none of them are completed, only the CPT code for the first planned procedure will be reported with the applicable modifier. The other planned procedures are not reported at all.
Understand Reimbursement Details for the Modifier
Procedures appended with modifier 74 are generally 100% reimbursable at the applicable Outpatient Prospective Payment System (OPPS) facility rate. The reason? The facility resources are consumed in the same way as a complete surgery. However, modifier 73 is paid at 50% of the applicable rate.
Fulfill the Documentation Requirements
An ASC claim for a terminated surgery must include an operative report and be made available upon request by the contractor. The operative report should clearly document:
- The reason the procedure was terminated.
- Anesthesia type administered and when it was given (or the point at which the procedure was initiated).
- The services and supplies provided before termination.
- The clinical circumstances that threatened patient well-being.
Understanding Modifier 74 vs. 53
Although modifiers 53 and 74 are used to report discontinued surgical procedures after anesthesia administration, they are not the same. They cannot be used interchangeably during medical billing, and the following table clearly distinguishes the two.
| Aspect | Modifier 74 | Modifier 53 |
|---|---|---|
| Who Uses it | Outpatient hospital/ASC only | A professional or a physician only |
| Applicable Scenarios | Procedure discontinued post-anesthesia administration or after procedure initiation | Procedure discontinued after anesthesia administration because of a threat to the patient’s well-being |
| Anesthesia Requirement | Must be administered, or the procedure should be started | No particular threshold requirement for physician claims |
| Reimbursement | 100% reimbursed per the OPPS rate | Submitted at full charge; payer determines reduction |
| Claim Form Type | CMS-1450 or UB-04 | CMS-1500 |
Source: AAPC
Quick Insight: Modifier 74 applies to institutional (facility) billing, while modifier 53 applies to professional (physician) billing, clearly distinguishing the two.
Ace Facility Claim Submissions with MediBillMD
Modifier 74 is a facility-specific modifier that requires precise documentation, reporting the correct time of anesthesia administration, and strict adherence to CMS billing guidelines.
Medical billers must understand:
- Documentation requirements
- Distinction from modifier 53
- CMS payment policies
- Anesthesia types
- Termination time
Missing any of these requirements triggers a facility’s claim denial. Remember, non-compliance and claim errors may be posing undue stress on your internal team.
Now may be the perfect time to rely on a third-party for outsourced medical billing services.
MediBillMD helps surgical centers and outpatient facilities:
- Reduce denials
- Meet billing requirements
- Maintain accurate documentation
- Ensure correct submissions


