Subscriber ID Override

Modify subscriber/member IDs on claims. Strip dashes or spaces, add prefixes or suffixes, or replace the ID entirely.

Applies to: Professional (837P), Institutional (837I), Dental (837D)

When to Use This

A payer rejects claims because the member ID has dashes (e.g., “123-456-789” should be “123456789”)
A payer requires a specific prefix on all member IDs (e.g., “WPA” + member ID)
You need to strip spaces from member IDs that come in with extra whitespace
A payer's member ID format changed and you need to transform the old format

Field	Required	Description
Start Date	Yes	When this rule becomes active
End Date	No	When this rule expires
Payer Number	No	Only apply for a specific payer. Blank = all payers
Match Pattern	No	Only modify IDs that contain this text. Blank = apply to all IDs. Example: entering “WPA” will only match IDs like “WPA12345”
Replacement Value	No	Replace the entire ID with this value. If set, this overrides strip/prefix/suffix
Strip Dashes	No	Remove all dashes (-) from the member ID
Strip Spaces	No	Remove all spaces from the member ID
Prefix to Add	No	Text to prepend to the member ID
Suffix to Add	No	Text to append to the member ID
Notes	No	Your reference notes

When multiple options are set, they apply in this order:

Aetna rejects claims with dashes in the member ID.

Field	Value
Payer Number	60054
Strip Dashes	✓ Checked

Result: “123-456-789” becomes “123456789”

State Medicaid requires “MCD” prefix on all member IDs.

Field	Value
Payer Number	77043
Prefix to Add	MCD

Result: “12345678” becomes “MCD12345678”

A specific payer always needs the same subscriber ID format.

Result: Any ID containing “WPA” (like “WPA12345”) becomes “NEWID999”