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CO-49 Denial Code: Routine or Preventive Exam Not Covered

CO-49 means the payer denied the service because it's a routine or preventive exam, or a diagnostic or screening procedure done with one, and the plan doesn't cover it. Check whether the visit was coded correctly and whether the patient has a preventive benefit.

Quick facts

Code
CO-49 (CARC 49)
Status
Active In use since January 1, 1995; last modified July 1, 2017.
Code set
Claim Adjustment Reason Codes (CARC)
Group codes
  • CO (Contractual Obligation): Under CO the provider can't bill the patient unless the patient was told in advance and agreed to pay, as payer and program rules allow.
  • PR (Patient Responsibility): Common for this code when the plan simply excludes routine care. The patient is responsible and can be billed.
Official description
This is a non-covered service because it is a routine/preventive exam or a diagnostic/screening procedure done in conjunction with a routine/preventive exam. Usage: Refer to the 835 Healthcare Policy Identification Segment (loop 2110 Service Payment Information REF), if present.
X12 Claim Adjustment Reason Codes, retrieved September 25, 2026
Last verified
against the official X12 list.

What CO-49 means

CARC 49 says this is a non-covered service because it is a routine or preventive exam, or a diagnostic or screening procedure done in conjunction with one. The payer looked at the codes and decided the service was routine care that the patient’s plan doesn’t cover, or that a test was part of a routine exam rather than a diagnostic workup.

The usage note points to the 835 Healthcare Policy Identification segment for the payer’s specific policy.

Most ACA-compliant plans cover many preventive services without cost-sharing, so a CO-49 on a commercial plan is worth a second look. It may reflect coding, frequency, age, or network issues rather than a true exclusion. Medicare, by contrast, generally excludes routine physical exams except for specific preventive benefits like the Welcome to Medicare visit and the annual wellness visit.

Common causes

  • Plan excludes routine exams, or the service isn’t on the plan’s preventive list.
  • Frequency exceeded, such as a second annual physical within a year.
  • Preventive code used for a problem visit because the visit was scheduled as a physical.
  • Screening Z codes on a diagnostic test, or a test done because of symptoms coded as routine screening.
  • Medicare patient billed a routine physical instead of a covered preventive benefit.
  • Out-of-network preventive care that the plan covers only in-network.

How to fix it

  1. Check the patient’s preventive benefits and frequency limits.
  2. Review the documentation. If the visit addressed a problem, recode it as a problem-oriented visit with the relevant diagnosis. If both occurred, bill both with modifier 25 on the problem visit where supported.
  3. Fix diagnosis coding so screening and diagnostic services are correctly distinguished in box 21 and linked in box 24E.
  4. Send a corrected claim with resubmission code 7 in box 22.
  5. Bill the patient if the payer reports PR, or if the patient agreed in advance to pay for a non-covered service under applicable rules.

How to prevent it

  • Verify preventive benefits and last-visit dates before scheduling physicals.
  • Tell patients upfront when a routine service may not be covered, and get written acknowledgment where required.
  • Use the right Medicare preventive codes rather than general physical exam codes.
  • Code screening versus diagnostic carefully. A Claims Validator can flag preventive codes paired with problem diagnoses and the reverse.

Remark codes that may appear with CO-49

  • N429 (Not covered when considered routine.): Not covered when considered routine.
  • N130 (Consult plan benefit documents/guidelines for information about restrictions for this service.): Points to plan benefit documents that exclude or limit routine services.
  • PR-204 (This service/equipment/drug is not covered under the patient's current benefit plan): The service isn't covered under the patient's current benefit plan, a broader exclusion.
  • CO-96 (Non-covered charge(s).): A general non-covered charge, used with remark codes that explain why.
  • PR-119 (Benefit maximum for this time period or occurrence has been reached.): Benefit maximum reached, such as one preventive visit per year.
  • CO-50 (These are non-covered services because this is not deemed a 'medical necessity' by the payer.): Not medically necessary, which applies to diagnostic services instead.

CO-49 FAQ

Why was a preventive visit denied as not covered?

The plan may not include that preventive service, the patient may have already used their annual preventive visit, or the payer's frequency or age rules weren't met. Some plans also exclude routine exams, such as Medicare's general exclusion of routine physicals outside specific preventive benefits.

What if the visit was actually for a problem?

If the patient came in for a specific complaint, the visit should be coded as a problem-oriented service with the symptom or condition diagnosis. If it was coded as preventive by mistake, send a corrected claim.

Can I bill a preventive and a problem visit on the same day?

Often yes, when a significant, separately identifiable problem is addressed during a preventive visit. Modifier 25 is typically added to the problem visit, and documentation should support both. Payer rules vary.