> ## Documentation Index
> Fetch the complete documentation index at: https://docs.thrizer.com/llms.txt
> Use this file to discover all available pages before exploring further.

# July 31, 2026 — Member ID format and BCBS claim routing

> Saving insurance now requires an alphanumeric Member ID, and BCBS claims can route to the correct Blue plan based on the Member ID prefix.

<Note>
  Looking for older announcements? See [all past updates](/help/changelog/index).
</Note>

## New

### BCBS claims can route to the right Blue plan automatically

Blue Cross Blue Shield members carry a plan-specific alphanumeric prefix at the start of their Member ID. When a client's Member ID matches a configured prefix, Thrizer now sends the claim to the correct Blue plan instead of the parent BCBS payer.

**Who this affects:** clinicians and clients billing BCBS through Thrizer.

**Why it matters:** claims land at the correct Blue plan on the first submission, which reduces rejections and rerouting.

**What to do:** nothing — routing happens automatically when the client's saved Member ID matches. Make sure the Member ID entered on the client's insurance is exactly what appears on the card. See [Check benefits](/help/clinician/check-benefits) and [Link your insurance](/help/client/link-insurance).

## Updates

### Member ID must now be alphanumeric

Insurance saves in the Clinician Portal, the Client Portal, and the eligibility widget now require the Member ID to be **letters and numbers only** — no spaces, hyphens, slashes, or other punctuation.

**Who this affects:** anyone saving or updating insurance on Thrizer.

**Why it matters:** insurance uses strictly alphanumeric Member IDs on EDI submissions. Rejecting punctuation at save time prevents benefit-check and claim errors that used to appear later.

**What to do:** enter the Member ID exactly as it appears on the insurance card, without dashes or spaces. If you see **"Member ID must be alphanumeric"**, remove any non-alphanumeric characters and save again. Test-mode codes like `TM-1` used in the eligibility widget still work as before. See [Check benefits](/help/clinician/check-benefits) and [Link your insurance](/help/client/link-insurance).