Within the global period of another service
This service falls inside the global surgical period of a procedure already paid, so it is not paid separately.
Usual causes
- Post-operative visit inside the 10- or 90-day global period.
- Unrelated visit or procedure during the global period billed without modifier 24 or 79.
- Staged or related procedure without modifier 58.
The fix
If the service was unrelated or a planned staged procedure, add the correct modifier and the supporting diagnosis and resubmit. Routine post-operative care is a write-off.
Appeal or corrected claim?
Corrected claim with modifier 24, 58 or 79 when appropriate.
Deadline to watch
Timely filing limit.
Exact limits are in your payer contract or provider manual. When in doubt, send the correction or appeal this week.
N525 in short
What does N525 mean?
This service falls inside the global surgical period of a procedure already paid, so it is not paid separately. The official X12 text reads: "These services are not covered when performed within the global period of another service."
What usually causes a N525 denial?
Post-operative visit inside the 10- or 90-day global period. Unrelated visit or procedure during the global period billed without modifier 24 or 79. Staged or related procedure without modifier 58.
How do I fix N525?
If the service was unrelated or a planned staged procedure, add the correct modifier and the supporting diagnosis and resubmit. Routine post-operative care is a write-off.
Should I appeal N525 or send a corrected claim?
Correct or appeal (see note). Corrected claim with modifier 24, 58 or 79 when appropriate.
What deadline applies to N525?
Timely filing limit.