CO 16 Denial Code Description (2026)

Denial Code CO-16 stand in RCM process as “Lack Information”. In Revenue Cycle Management denials are important part of any claim and handling the denial effectively is necessary as compare to billing and processing the claims. When claim is denied CO 16 Denial Code Description means needed some more information by the payer or insurance company which is not present with submitted claim.

CO 16 Denial Code Solution:

CO-16 denial code means claim denied due to Lack Information. In this case for handling the denial we need to follow below mentioned steps,

Step 1- We need to check EOB ( Explanation of Benefit) thoroughly for getting the exact reason, what specific information insurance asking for?

Step 2- Wee need to check other claims or DOS of same patient if same service provided earlier, so we can figure out if same service paid earlier, what we are missing?

Step 3- At last we need to call insurance company and ask rep what exact information or medical record they required, ask timely filing limit, mailing address, and call reference number.

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