If you receive a claim rejection of "Entity's Postal/Zip Code invalid", this rejection indicates that an invalid zip code is being sent on the claim.
Most payers require the full 9-digit Zip code for addresses on electronic claims. This rejection typically indicates that the claim includes a ZIP code without the 4-digit extension or the ZIP code is invalid.
Resolution
Please verify the ZIP code information in the patients record including
Provider
Subscriber Address
Insured Address
Service Location