Blue Cross Complete is now accepting ANSI 5010 ASC X12 275 unsolicited claim attachment transactions via Optum/Change Healthcare and Availity. Providers may submit the electronic 275 claim attachment transaction via Payer ID: 7355, according to the following guidelines: 

Availity: There are two ways 275 claim attachments can be submitted: 

• Batch - You may either connect to Availity directly or submit via your EDI clearing house. 
• Portal - Individual providers may also register at: availity.com/documents/learning/LP_AP_GetStarted_Atypical/index.html#/.*

Optum/Change Healthcare: There are two ways 275 claim attachments can be submitted: 

• Batch - You may either connect to Optum/Change Healthcare directly or submit via your EDI clearing house. 
• API (via JSON) - You may submit an attachment for a single claim. 

General guidelines: 

• A maximum of 10 claim attachments are allowed per submission. Each attachment cannot exceed 10 megabytes (MB), and total file size cannot exceed 100MB. 
• The acceptable supported formats are pdf, tif, tiff, jpeg, jpg, png, docx, rtf, doc, and txt. 
• The 275 claim attachments must be submitted prior to the 837. After successfully submitting a 275-claim attachment, an Attachment Control Number will generate. The Attachment Control Number must be submitted in the 837 transactions as follows: 
  • CMS 1500 
    • Field Number 19 
    • Loop 2300 
    • PWK segment 
  • UB-04 
    • Field Number 80 
    • Loop 2300 
    • PWK01 segment 

Click here to read the full announcement sent out by Blue Cross Complete.