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OHIP Error & Explanatory Codes

What that OHIP rejection code means - and what to do about it

By Dr. Alvin Chin, MD · Last reviewed June 2026 · Version 1.2

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Search by code or keyword to see what it means and what to do - the OHIP claim error and remittance explanatory codes physicians hit most.

Start typing to search all 414 OHIP error and explanatory codes in this reference. The full guide is below.

Why This Guide Exists

You submit a clean-looking day sheet, and a week later a handful of claims come back with a cryptic two- or three-character code beside them. EH2. VH9. A2A. Code 35. Nobody teaches you these in residency, and the official Ministry of Health lists run to hundreds of entries with terse, jargon-heavy descriptions.

This page decodes the OHIP error and explanatory codes new Ontario physicians hit most, tells you in plain language what each one means, and gives you a concrete next step for each. Use the search box above to jump straight to a code, or read on for how the whole system fits together.

Who this guide is for:

  • New graduates reconciling their first OHIP remittance and seeing rejections for the first time
  • Physicians who self-bill and want to clear errors without a billing agent
  • Anyone trying to understand why a claim was reduced, held, or paid at $0

First, Know Which Report You're Looking At

OHIP gives you feedback in two different places, and the kind of code tells you which one. Getting this distinction right saves you from chasing the wrong fix.

Where you see itWhat it isCode formatWhat it means
Claims Error ReportReturned within a few days of submission, before paymentThree characters (e.g. EH2, VH9, A2A)The claim was rejected up front. It was never paid. Fix it and resubmit.
Remittance Advice (RA)Your monthly payment statement from the MinistryTwo digits (e.g. 35, 50, 55)The claim was accepted but adjusted, reduced, or disallowed at payment time.
The 3-month rule. A rejected claim must be corrected and resubmitted within 3 months (technically, before it stale-dates 6 months from the service date - but aim for 3 to leave room for a second rejection). Do not let error reports pile up. The single biggest cause of lost OHIP income for new physicians is unworked error reports, not low fees.

The Three Families of Codes

Every code in the searchable lookup above falls into one of three buckets. Knowing the bucket tells you where to look and what kind of fix to expect.

Health card & eligibility

By far the most common category - EH2, VH1, VH9, EH4, EH5, EH1, VH2, VH4, VH8 and friends. Almost all of them come down to the health number, version code, or date of birth not matching the Ministry's Registered Persons Database on the date of service. Validating the card at the point of care (Health Card Validation, or HCV) prevents most of them, and most are a quick correct-and-resubmit once you have the right number.

Out-of-province patients are a frequent hidden cause here. A Quebec card will never clear OHIP - you have to use a RAMQ pathway instead. See the RAMQ guide for the three options. For international students, the UHIP guide covers the equivalent.

Service, code & diagnosis

These rejections - V21, A2A, V20, AD1, A1A, AC1 - are about the content of the claim itself: the fee code, the diagnostic code, the patient's age, a missing element, or a service maximum, rather than the patient's coverage. The fix is usually to correct the code, add the missing 3-digit diagnostic code, attach the base service a premium depends on, or confirm a frequency limit (some assessments and consults are payable only once in a given period).

Payment-time (remittance) codes

Two-digit codes - 50, 35, 55, 57, 30, 36, 41, 42 - appear on the monthly Remittance Advice against claims that were accepted but adjusted. Some are purely informational (a 50 just means it paid, sometimes at a different amount); others tell you money was reduced or clawed back; and a few, like 55 and 57, net to zero and exist only for reconciliation. When you believe a reduction is wrong, the channel is a Remittance Advice Inquiry, below.

The lookup above covers the Ministry's full code lists end to end: every three-character code from the Error Report Rejection Conditions (December 2022) that can appear on your Claims Error Report, and every two-character code from the Remittance Advice Explanatory Codes / Messages (March 2026) that can appear on your monthly Remittance Advice - each with its official Ministry wording. The Ministry revises these periodically through OHIP INFOBulletins, so confirm against the current publications before you act. The meanings are the Ministry's wording; the suggested actions are general guidance, not billing advice.

A Repeatable Way to Work an Error Report

However your billing software presents errors, the workflow is the same. Run it the same way every cycle and rejections stop being scary.

  1. 1.Pull the report the moment it arrives - error reports a few days after submission, the Remittance Advice monthly. Don't wait for month-end to look at submission rejections.
  2. 2.Sort by code. Group the rejections so you fix all the EH2s together, all the V21s together, and so on. The same fix usually clears the whole group.
  3. 3.Decide: fix or write off. Most health-card and coding errors are fixable and worth resubmitting. A genuinely uninsured patient (EH5) is a write-off or a patient bill, not a resubmission.
  4. 4.Correct the claim - update the version code, fix the number, add the diagnostic code, attach the base service.
  5. 5.Resubmit inside the window. Watch the service date: you have until it stale-dates. Resubmit promptly so a second rejection still leaves you time.
  6. 6.If you disagree, file a Remittance Advice Inquiry (see below) rather than resubmitting the same claim unchanged.

When You Think the Rejection Is Wrong

Sometimes the Ministry reduces or rejects a claim you believe was correct. Resubmitting the identical claim will just get rejected again. The right channel is a Remittance Advice Inquiry (RAI).

  • Submit a Remittance Advice Inquiry on the Ministry's form (0918-84), or electronically through your billing software / eSubmit where supported.
  • Reference the specific claim, the explanatory code, and why you believe the original submission was correct.
  • Keep the deadline in mind: inquiries are also time-limited, so don't sit on a disputed reduction.
  • Document your reasoning in the patient record in case the Ministry asks for supporting detail.

How MedConcierge Helps

Working error reports by hand - downloading files, decoding codes, hunting for supporting documents - is where new physicians lose the most time and money. MedConcierge does the heavy lifting:

  • Pulls your error reports and monthly Remittance Advice automatically every cycle, so nothing sits unworked and nothing stale-dates without you seeing it.
  • Flags every rejected and reduced claim for you - sorted and grouped by code - instead of leaving you to comb through a raw file.
  • Explains each code in plain language and suggests the likely fix, from a wrong version code to a missing diagnostic code or a premium billed without its base service.
  • Validates health cards before you submit, catching the EH and VH errors above before they ever become a rejection.
  • Lets you correct and resubmit, or file a manual review / Remittance Advice Inquiry - with your notes and supporting documents attached - right inside the system, instead of mailing paper forms.
  • And if you spot a fee or code that looks wrong, the built-in contributor tools let you report it in two taps and earn points toward a say in what we build next.
This guide is general information for Ontario physicians, not billing, legal, or tax advice. Code meanings are summarized for clarity and OHIP updates them periodically - always confirm against the current Ministry of Health Remittance Advice Explanatory Codes and Error Report Rejection Conditions documents, and validate eligibility through Health Card Validation before you rely on a claim.

This guide is for general information for Ontario physicians and is not legal, tax, or billing advice. Programs and fees change — verify current details with the relevant payor before you rely on them.