N702N-series (general use)Coverage & Eligibility
N702: Decision based on prior claim history
The payer decided this claim by looking at previously adjudicated claims for the same or similar services — duplicate-adjacent logic across claims.
Commonly appears with these denial codes
CO-18CO-B13
The denial code gives the category; N702 pinpoints the specific problem. Read them together before touching the claim.
What to do about it
Pull the patient's claim history for the period. Distinct services: appeal with documentation differentiating them. True overlaps: correct and move on.
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