Procedure code not valid for the service or the date
The code billed does not describe the service as documented, or was not valid on that date.
Usual causes
- Code replaced by a new one for the year.
- Code picked that does not match the documented service.
- Payer-specific code required instead of the CPT code.
The fix
Select the correct code for the date of service and the documented service, then resubmit.
Appeal or corrected claim?
Corrected claim.
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.
N56 in short
What does N56 mean?
The code billed does not describe the service as documented, or was not valid on that date. The official X12 text reads: "Procedure code billed is not correct/valid for the services billed or the date of service billed."
What usually causes a N56 denial?
Code replaced by a new one for the year. Code picked that does not match the documented service. Payer-specific code required instead of the CPT code.
How do I fix N56?
Select the correct code for the date of service and the documented service, then resubmit.
Should I appeal N56 or send a corrected claim?
Corrected claim. Corrected claim.
What deadline applies to N56?
Timely filing limit.