OHIP error code EH4: service date after the eligibility end date

Why it fires

• The patient moved out of province and Ontario coverage ended before the service date.
• Coverage lapsed and had not been renewed on the date the service was provided.
• Coverage was terminated retroactively to a date before the service.
• The service date was keyed incorrectly, placing an insured service after the end of coverage.

EH4 is a comparison between two dates: the date of service on your claim and the eligibility end date the ministry holds for that patient. It is a factual statement about coverage rather than a data-format complaint, which is what makes it different from the health-number codes. VH1 and VH9 question the number itself. EH4 accepts the number and says coverage had ended.

It has two close relatives worth distinguishing. EH1 is the same comparison at the other end, where the service predates the eligibility start date. EH5 says the date does not fall within an eligible period, which covers gapped coverage rather than a single closed end date.

The reason specialists see EH4 more than they expect is the referral lag. A patient referred in one quarter may be seen months later, and coverage can change in between. Nothing about the encounter looks unusual, the health card scans, and the claim rejects because eligibility ended between the referral and the appointment. Retroactive terminations produce the same result on claims that were correct when submitted.

What it costs

The claim is rejected and OHIP will not pay it for that date. Whether the fee is collectable at all depends on whether the patient was genuinely uninsured, which is a different question from whether the claim was correct.

This is one of the few codes in this library where the answer may be that no insured claim exists. If coverage truly ended before the service, correcting and resubmitting will not produce payment, and the service falls outside the insured system for that date.

The cases that are worth working are the ones where the data was wrong: a mistyped service date, a claim submitted against the wrong patient, or a coverage record that has since been reinstated. Separating those from genuine lapses early is what keeps the follow-up effort proportionate.

How to fix it going forward

• Validate the health card at the visit rather than relying on the record from the referral date.
• For patients returning after a long gap, confirm coverage before a high-value consultation.
• Check the service date on the claim against the date in the chart when EH4 appears, before assuming a coverage problem.
• Flag patients who mention a move out of province, since coverage changes rarely reach the specialist office.

The single most effective control is checking eligibility at the visit. Where a referral is months old, the coverage information attached to it describes a date that has passed.

For long-interval follow-up, particularly in psychiatry and internal medicine where patients return after a year or more, treat the return visit as a new eligibility check rather than a continuation of the previous one.

Is it recoverable?

Recoverable by resubmission inside the window

Where the service date or the patient identifier was wrong, correct it and resubmit inside the three-month window. Where coverage genuinely ended before the service, the claim is not payable by OHIP for that date.

Check the claim against the chart first. A transposed service date is the most common recoverable cause, and it is corrected and resubmitted in minutes. Confirm the health number and version code at the same time, since a claim submitted against the wrong patient record produces the same rejection.

Where coverage had genuinely ended, resubmission is not the path. If the coverage record is later corrected or reinstated by the ministry and the three-month window has closed, the claim may be recoverable by written application where documentation supports it.

Related codes

• EH1: service date before the eligibility start date
• EH5: service date outside the eligible period
• VH9: health number not registered with the ministry
• VH1: health number missing or invalid

Frequently asked questions

What does OHIP error code EH4 mean?

EH4 means the date of service is later than the date the patient’s OHIP coverage ended on the ministry record. The claim is refused for that date.

How is EH4 different from EH1 and EH5?

EH1 means the service date falls before coverage started. EH4 means it falls after coverage ended. EH5 means the date does not sit within an eligible period, which covers coverage with gaps in it.

Can I bill the patient after an EH4 rejection?

That depends on whether the patient was genuinely uninsured for that date, which is a separate question from the rejection. Confirm the coverage record and the service date first, because a keying error is the most common cause.