Quick Facts
Status
24
Modifier 24
Unrelated Evaluation and Management Service During a Postoperative Period
Active
Global Period
Yes
Modifier 24
Active
Applies To
E/M Services
Category
Use With
Evaluation and Management
CPT Codes
What is Modifier 24?
Modifier 24 is appended to an evaluation and management (E/M) service performed during the postoperative period when the visit is completely unrelated to the original surgical procedure. It tells the payer that the service is outside the global surgical package and may qualify for separate reimbursement.
The modifier should only be reported when the physician documents that the patient's condition, evaluation, and treatment are unrelated to the original surgery.
When to Use
Evaluation of a new medical condition during the postoperative period.
Office visit for an illness unrelated to the surgery.
Management of a separate injury or diagnosis.
E/M service that is not included in routine postoperative care.
Documentation Requirements
Clearly document the unrelated diagnosis.
Include a separate history and examination.
Support the medical necessity of the E/M service.
Explain why the visit is unrelated to the original surgery.
Document the assessment and treatment plan.
Examples
Example 1
A patient returns two weeks after rotator cuff surgery complaining of severe sinus pain and fever. The physician evaluates acute sinusitis and prescribes antibiotics. Since the visit is unrelated to the shoulder surgery, Modifier 24 is appropriate.
Example 2
A patient recovering from hernia repair develops a urinary tract infection. The physician performs a complete office evaluation and prescribes treatment. Because the infection is unrelated to the surgery, the E/M service may be reported with Modifier 24.
Billing Tips
Only report Modifier 24 with eligible E/M services.
Do not append Modifier 24 to surgical procedure codes.
Routine postoperative visits are included in the global package.
Always document why the visit is unrelated to the previous surgery.
Verify the patient is still within the global surgical period.
Common Denial Reasons
Visit considered routine postoperative care.
Documentation does not support an unrelated diagnosis.
Modifier appended to an ineligible CPT code.
Medical necessity not clearly documented.
Insufficient documentation of the E/M service.
Related Modifiers
Modifier 25
Significant, Separately Identifiable E/M Service
Modifier 57
Decision for Surgery
Modifier 58
Staged or Related Procedure During the Postoperative Period
Modifier 79
Unrelated Procedure by the Same Physician During the Postoperative Period
Learn More About Modifier 24
Need more than a quick overview?
CPTCodeGuide provides a concise reference for Modifier 24, but some coding situations require more detailed guidance. Visit ModifierLookup.com for comprehensive billing examples, documentation requirements, payer guidance, denial scenarios, coding comparisons, and frequently asked questions.
