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Error code

PA1 — Physician Assistant (PA) claim cannot include other OHIP fee codes

PA codes mixed with others

A Physician Assistant Pilot claim mixed PA tracking codes with other OHIP fee codes, which isn't allowed on one claim.

What to do: Put the PA tracking codes on their own PA Pilot claim and the insured services on a regular claim.

Code
PA1
Description
Physician Assistant (PA) claim cannot include other OHIP fee codes

Explanation

Updated October 26, 2026

PA1 means a Physician Assistant (PA) Pilot claim mixed PA tracking codes with other OHIP fee codes. Split them and resubmit.

What it means

Error PA1 means the claim was rejected as an invalid PA service. Under the Ministry's rules, a Physician Assistant (PA) Pilot claim may contain one or more PA tracking fee codes, but no other OHIP insured service fee codes on the same claim.

Common causes

  • An insured service code was added to a claim submitted under the PA Pilot
  • A PA tracking code was put on a regular claim with other services

How to fix it

  1. Separate the PA tracking codes from the other fee codes.
  2. Submit the PA tracking codes on their own PA Pilot claim, and the insured services on a regular claim under the right billing number.
  3. Resubmit within three months of the service date if you can. 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

  • The claim still has PA tracking codes and other OHIP fee codes together.

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: PA2, PA3, PA4, PA5, PA6

Sources