RARC N21Alert
This claim line was separated from the original submission to speed up processing.
This is an informational alert code and isn't tied to a specific claim adjustment.
Related Alert codes
M16Refer to the payer's website or prior mailings for the full policy details behind this adjustment.M17This claim was approved, but going forward the provider, not the payer, will be responsible for this type of charge.M27The patient isn't liable for this amount based on the circumstances of this claim.M32This is a conditional payment pending the primary payer's final determination; it may need to be refunded once that determination is made.M38The patient is liable for this charge because proper advance notice was given.M39The patient isn't liable for this charge because the required advance notice wasn't properly given.M70The National Drug Code submitted was translated into a corresponding HCPCS code for processing.MA01Explains the patient's or provider's right to appeal this determination within 120 days.
Frequently asked questions
What does RARC N21 mean?
This claim line was separated from the original submission to speed up processing.
Is RARC N21 a supplemental or alert code?
N21 is an Alert code — it's informational and isn't tied to a specific claim adjustment.
CARC codes maintained by X12 (x12.org). Descriptions on this site are original reference interpretations. RARC codes maintained by CMS. Always verify codes with authoritative sources before making billing decisions.