Modifier 24- Unrelated Evaluation and Management Service During a Postoperative Period

Modifier 24 is used when a provider performs an unrelated evaluation and management service during a postoperative period.

What is Modifier 24?

Modifier 24 tells insurance payers that the patient’s visit was unrelated to the surgery or procedure currently in the postoperative period.

When to Use Modifier 24

• The patient develops a new condition during recovery
• The visit is unrelated to the previous surgery
• Additional evaluation is medically necessary
• The E/M service is separate from postoperative care

Billing Example

A patient recovering from surgery visits the provider for a new respiratory illness. Modifier 24 may be added to the E/M code because the service is unrelated to the surgery.

Documentation Tips

• Clearly separate postoperative care from new issues
• Document medical necessity
• Include details about the unrelated condition
• Avoid overlap with routine follow-up care

Common Denial Reasons

• Documentation does not support an unrelated service
• Visit considered routine postoperative care
• Insufficient provider notes
• Incorrect modifier usage