This is from Noridian:
Method 2—Delivery via Shipping or Delivery Service Directly to a Beneficiary
If the supplier utilizes a shipping service or mail order, the POD documentation must be a complete record tracking the item(s) from the DMEPOS supplier to the beneficiary. An example of acceptable proof of delivery would include both the supplier’s own detailed shipping invoice and the delivery service’s tracking information. The supplier’s record must be linked to the delivery service record by some clear method like the delivery service’s package identification number or supplier’s invoice number for the package sent to the beneficiary. The POD record must include:
•Beneficiary’s name
•Delivery address
•Delivery service’s package identification number, supplier invoice number or alternative method that links the supplier’s delivery documents with the delivery service’s records.
•Sufficiently detailed description to identify the item(s) being delivered (e.g., brand name, serial number, narrative description)
•Quantity delivered
•Date delivered
•Evidence of delivery
If a supplier utilizes a shipping service or mail order, suppliers must use the shipping date as the date of service on the claim.
Suppliers may also utilize a return postage-paid delivery invoice from the beneficiary or designee as a POD. This type of POD record must contain the information specified above.
Hope this helps!