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M14 Remark Code: Injection Bundled With Office Visit

M14 means the payer will not pay separately for an injection given during an office visit, and will not pay for a full office visit when the patient only came in for an injection.

Quick facts

Code
M14 (RARC M14)
Status
Active In use since January 1, 1997.
Code set
Remittance Advice Remark Codes (RARC)
Group codes
  • CO (Contractual Obligation): The bundled injection or unsupported visit is a provider write-off and cannot be billed to the patient.
Official description
No separate payment for an injection administered during an office visit, and no payment for a full office visit if the patient only received an injection.
X12 Remittance Advice Remark Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What M14 means

M14 covers two sides of the same situation. First, if a patient receives an injection during an office visit, the payer considers the injection administration part of the visit and will not pay it separately. Second, if the patient came in only for the injection, the payer will not pay a full office visit on top. Either way, one of the two lines on your claim was reduced to zero.

This is a Medicare-derived remark. Commercial payers have their own injection and visit bundling policies, so outcomes vary.

Common causes

  • A visit and an injection administration were billed together without documentation of a separate evaluation.
  • Modifier 25 was missing from the visit when a separate evaluation did occur.
  • The practice automatically adds a visit charge whenever a patient is roomed.
  • An injection-only encounter was billed with a problem-focused visit level.

How to fix it

  1. Review the note to see whether a significant, separately identifiable evaluation took place.
  2. If it did, submit a corrected claim with modifier 25 on the visit line (box 24D) and resubmission code 7.
  3. If it did not, accept the adjustment and remove the visit from future injection-only encounters.
  4. Confirm the drug line was billed with the right HCPCS Level II code and units.

How to prevent it

Train staff to separate injection-only encounters from full visits at check-in. Build a rule that blocks a visit plus injection unless modifier 25 and supporting documentation are present. For more on how payers bundle services on the same date, see NCCI bundling and modifiers.

Codes that may appear with M14

  • CO-97 (The benefit for this service is included in the payment/allowance for another service/procedure that has already been adjudicated.): The injection administration is considered included in the visit payment.
  • CO-234 (This procedure is not paid separately.): The procedure is not paid separately.
  • CO-150 (Payer deems the information submitted does not support this level of service.): The information submitted does not support the level of visit billed for an injection-only encounter.
  • M15 (Separately billed services/tests have been bundled as they are considered components of the same procedure.): A general bundling remark for separately billed components of the same procedure.
  • N20 (Service not payable with other service rendered on the same date.): The service is not payable with another service on the same date.
  • N19 (Procedure code incidental to primary procedure.): The procedure is incidental to the primary procedure.

M14 FAQ

Can the drug itself still be paid?

M14 addresses the injection administration and the visit. Drugs supplied are often separately payable using the appropriate HCPCS Level II code, depending on the payer.

When can a visit be billed with an injection?

When the provider performs a significant, separately identifiable evaluation beyond the injection. Modifier 25 on the visit signals this, and documentation must support it.

What should I bill for an injection-only visit?

Bill the injection administration and the drug, not a full visit. Some payers allow a minimal nurse visit instead; check the payer's policy.