CARC 190 Active

CO-190: Billing for SNF Qualified Stay Already Covered

TL;DR

The service is bundled into the SNF payment. Coordinate with the SNF or appeal if the service is excluded from consolidated billing.

Action
Review & Decide
Who Pays
Provider
Appeal
Yes
Patient Impact
None
Disclaimer
This content is for informational purposes only and does not constitute professional billing advice. Always verify information against your payer contracts and current coding guidelines. Consult a certified billing specialist for specific claim issues.

What Does CO-190 Mean?

With CO (Contractual Obligation), the service is bundled into the SNF payment as a contractual matter. If the service is truly included in consolidated billing, coordinate with the SNF for payment. If the service is excluded from consolidated billing, appeal with CMS documentation.

CARC 190 indicates that the service billed was rendered to a patient during a qualifying Skilled Nursing Facility (SNF) stay, and under Medicare's SNF Consolidated Billing rules, the service is bundled into the SNF's per diem payment. Outside providers cannot bill Medicare separately for services that fall within SNF consolidated billing — they must bill the SNF directly.

SNF consolidated billing covers most services provided during a qualifying stay, including therapy services (PT, OT, speech), laboratory tests, certain diagnostic services, DME, and supplies. However, specific services are excluded from consolidated billing and can be billed separately, such as certain physician services, dialysis, and some high-cost procedures. The key is determining whether the specific service falls within or outside the consolidated billing rules.

Common Causes

Cause Frequency
Service is included in the SNF consolidated billing Under Medicare's SNF Consolidated Billing rules, certain services are bundled into the SNF's per diem payment and cannot be separately billed by the provider Most Common
Therapy services billed separately during SNF stay Physical therapy, occupational therapy, or speech therapy services were billed separately by an outside provider when they are included in the SNF's bundled payment Most Common
Lab or diagnostic services included in SNF payment Laboratory or diagnostic services that fall under SNF consolidated billing were billed separately instead of through the SNF Common
DME or supplies included in SNF per diem Durable medical equipment or supplies that are part of the SNF consolidated billing were billed separately Common
SNF exclusion not properly applied The service is actually excluded from SNF consolidated billing but was incorrectly denied under this code Occasional

How to Resolve

  1. Check CMS SNF consolidated billing rules Determine whether the specific service is included in or excluded from SNF consolidated billing.
  2. Bill the SNF if included If the service is bundled, bill the SNF directly for reimbursement.
  3. Appeal if excluded from consolidated billing Submit an appeal citing the CMS regulation or transmittal that excludes the service from SNF consolidated billing.
  4. Verify the qualifying stay If the patient did not have a qualifying SNF stay, submit documentation and appeal.
Appeal Guide

Appeal with documentation showing the service is excluded from SNF consolidated billing per CMS rules, or that the patient did not have a qualifying SNF stay at the time of service. Reference the applicable CMS regulation or transmittal.

Common RARC Pairings

The RARC code tells you exactly what triggered the CO-190:

RARC Description
N130 You may need to review plan documents or guidelines Review CMS SNF Consolidated Billing rules to determine if the service is bundled →
MA01 Alert: If you do not agree with what we approved for these services, you may appeal Appeal if the service is excluded from SNF consolidated billing →

How to Prevent CO-190

Also Filed As

The same CARC 190 may appear with different Group Codes:

OA-190 PR-190

Related Denial Codes

CO-A5 — Medicare PPS Capital Cost Outlier Amount CO-194 — Anesthesia by Operating/Assistant/Attending Physician CO-144 — Incentive Adjustment for Preferred Product/Service CO-146 — Diagnosis Invalid for Date of Service CO-147 — Provider Accepted Reduced Payment from Regulatory Authority

Sources

  1. https://www.mdclarity.com/denial-code-carcs
  2. https://x12.org/codes/claim-adjustment-reason-codes
  3. https://portal.ct.gov/-/media/ohs/health-it-advisory-council/apcd-advisory-group/data-submission-guide-workgroup/meeting-materials/6-30-22/carc-codes_final.pdf
  4. https://medicaid-documents.dhhs.utah.gov/Documents/pdfs/ClaimDenialCodes.pdf
  5. Codes maintained by X12. Visit x12.org for official definitions.