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Error code

H8 — Hospital number and/or admission date required for in-hospital service

Hospital details missing

This in-hospital service needs the hospital master number and/or the in-patient admission date on the claim.

What to do: Add the hospital's master number and the patient's admission date, then resubmit.

Code
H8
Description
Hospital number and/or admission date required for in-hospital service

Explanation

Updated October 26, 2026

H8: an in-hospital service needs the hospital (master) number and/or the admission date on the claim. Add the missing details.

What it means

H8 means the claim was for an in-hospital service but did not include the hospital number (master number) and/or the in-patient admission date that OHIP needs to pay it.

The Ministry's claim specifications require the master number and the in-patient admission date for non-emergency hospital in-patient services, except consultations, repeat consultations and limited consultations. The admission date must be the same as or before the service date.

Common causes

  • The master number was left off an in-patient claim
  • The admission date was left off, or is after the service date

How to fix it

  1. Get the hospital's master number and the patient's admission date.
  2. Add them to the patient record in your billing software so future claims include them.
  3. For this claim, follow your RA. If it was not paid, send a Remittance Advice Inquiry (RAI) through eSubmit, or on form 0918-84, within 7 months of the RA date, with the master number and admission date.

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: AH8, HM, V28, V66, V67

Sources