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Error code

M2 — Maximum reached for X-ray exams (one or more practitioners)

X-ray maximum reached

The maximum for these X-ray examinations was already reached, counting claims by you and other physicians.

What to do: Check the X-ray's maximum in the Schedule and whether another physician billed the same exam in that period.

Code
M2
Description
Maximum reached for X-ray exams (one or more practitioners)

Explanation

Updated October 26, 2026

M2 means the maximum for these X-ray examinations was already reached, by you or another physician. Check what was already paid.

What it means

M2 means the maximum allowance for radiographic (X-ray) examinations has been reached. The count includes services by one or more practitioners, so another physician's claims can use up the limit.

Under the Schedule's rules (GP7), a maximum without a time period means per patient per day. A maximum with a time period is counted per patient in date order, and services past it are not paid.

Common causes

  • The patient had the same or a related X-ray billed by another physician
  • More views or examinations were billed than the listing allows

How to fix it

  1. Check the X-ray listing in the Schedule of Benefits for its maximum.
  2. Check whether the same examination was billed for the patient by another physician in the same period.
  3. If you believe the decision is wrong, send a Remittance Advice Inquiry (RAI) through eSubmit, or on form 0918-84, within 7 months of the RA date, with supporting details.

Don't resubmit if

  • The maximum was reached by services already paid.
  • The line is already on your RA. Question it with an RAI, not a new claim.

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: M1, M4, X4, X5, X6

Sources