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Error code

D1 — Initial procedure already billed - paid as repeat procedure

Paid at repeat fee

The procedure was paid at its repeat fee because the initial procedure was already claimed for this patient.

What to do: Check when the initial procedure was billed; send an inquiry only if this one was actually the initial procedure.

Code
D1
Description
Initial procedure already billed - paid as repeat procedure

Explanation

Updated October 26, 2026

OHIP paid this procedure at the repeat-procedure fee, because the initial procedure was already claimed for this patient.

What it means

Code D1 means a procedure was paid at its repeat fee, because the initial procedure had already been claimed.

Some procedures have a separate, lower code for repeats. For example, initial acute haemodialysis (G325) is followed by acute repeat treatments (G323) (J37), and diagnostic cystoscopy (Z606) has a lower fee when repeated within 30 days (Z607) (T7).

Common causes

  • The initial procedure was already billed earlier, by you or another physician

How to fix it

  1. Check when the initial procedure was billed for this patient.
  2. If this was in fact the initial procedure, for example because the earlier claim was wrong, send a Remittance Advice Inquiry (RAI) through eSubmit, or on form 0918-84, within 7 months of the RA date, with supporting details such as your chart notes.
  3. Otherwise, the repeat payment is correct.

Don't resubmit if

  • The initial procedure was already done and paid.

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: DA, S6, V1, AD5

Sources