Webdec 4, 2023 · when an insurance company denies a claim or service with denial code co 16, it typically indicates that the claim cannot be adjudicated due to incomplete. This injury/illness is covered by the liability carrier. Webdenial code 16 means that the claim or service is missing necessary information or contains errors related to submission or billing. This code should not be used for claims attachments or other documentation. Webthe co 16 denial indicates that a claim has been denied due to missing or incorrect information, often stemming…