< Error codes

Error code

ESF — Not eligible to bill

Not eligible to bill

Ministry records show the provider on the claim isn't eligible to bill this service as submitted; no further detail is given.

What to do: Check the billing number, group number, specialty code and the fee code's rules; if all look right, contact the Ministry.

Code
ESF
Description
Not eligible to bill

Explanation

Updated October 26, 2026

ESF means the provider isn't eligible to bill this service. Check the billing number, specialty and the fee code's rules.

What it means

ESF (Not eligible to bill) means the Ministry's records show the provider on the claim is not eligible to bill the service as submitted. The Ministry gives no further detail for this code.

How to fix it

  1. Check the billing number, group number and specialty code on the claim.
  2. Check the fee code's rules in the Schedule of Benefits for who may bill it.
  3. If everything looks right, contact the Ministry to find out why you are not eligible.
  4. Resubmit the corrected claim within three months of the service date. If that window has passed but the claim was first submitted on time, use the Ministry's stale-dated resubmission process.

Don't resubmit if

  • You have not found the reason. The same claim will reject again.

How APEX handles it

APEX reads your error reports and remittance advice from MCEDT and lists claims rejected with this code in its Correction Centre for you to correct and resubmit. See how APEX works · Pricing

Related codes: EQS, EQL, EQB, EQ1

Sources