New York Subscriber
Answer: Many payers require electronic claims as proof of timely filing. But on many occasions, you must provide full documentation, so you should file a paper claim--such as when filing claims with unlisted-procedure codes, or claims with modifier 22 (Unusual procedural services), 52 (Reduced services) or 53 (Discontinued procedure).
Solution: File the claim electronically and then submit paper documentation separately.
Be sure to include a note with the paper claim explaining: "This is not a duplicate claim. This documentation supports an electronic claim."
File the paper claim within the payer's allotted time frame, as well. Don't wait for your carrier to reject your electronic claim to file the paper claim.
If you wait, your payer may say the electronic claim was incomplete and the payer didn't reset the clock for timely filing after receiving the electronic claim.