R01Missing Health Service Number (HSN)
Reciprocal Medical Billing · Health Number error codes
What this reference tells you
R01 is an Error Report rejection condition. It helps identify why a claim failed initial processing so the underlying data or documentation can be reviewed.
Before using this code
Confirm the current Ministry publication, the patient and provider context, the date of service, and documentation supporting the claim. A searchable reference does not establish eligibility or guarantee payment.