Co26 denial code

Payers will deny the claims with CO 26 Denial Code – Expenses incurred prior to coverage, whenever the providers perform health care services to patient prior to the insurance coverage starts. What steps needs to be taken?

Co26 denial code. CO 19 Denial Code – This is a work-related injury/illness and thus the liability of the Worker’s Compensation Carrier; CO 20 and CO 21 Denial Code; CO 23 Denial Code – The impact of prior payer(s) adjudication including payments and/or adjustments; CO 26 CO 27 and CO 28 Denial Codes; CO 31 Denial Code- Patient cannot be identified as our ...

Reason Code 61: Denial reversed per Medical Review. Reason Code 62: Procedure code was incorrect. This payment reflects the correct code. Reason Code 63: Blood Deductible. Reason Code 64: Lifetime reserve days. (Handled …

27 Jun 2022 ... Ms Langham - The Centre for Women & Co ........................................................ 26 ... Code 2 – for urgent matters involving ...MCR - 835 Denial Code List CO : Contractual Obligations - Denial based on the contract and as per the fee schedule amount. CO should be sent if the adjustment is related to the contracted and/or negotiated rate Provider’s charge either exceeded contracted or negotiated agreement (rate, maximum number of hours, days or units) with the payer, exceeded the reasonable and customary amount for ...The steps to address code 236 are as follows: Review the claim details: Carefully examine the claim to identify the specific procedure or procedure/modifier combination that is causing the compatibility issue. Verify the National Correct Coding Initiative (NCCI) guidelines: Cross-reference the NCCI guidelines to ensure that the procedure or ...Payment adjusted because this service was not prescribed by a physician, not prescribed prior to delivery, the prescription is incomplete, or the prescription is not current. Start: 01/01/1995 | Stop: 02/01/2006. B18. This procedure code and modifier were invalid on the date of service.In the world of medical billing, denial codes play a crucial role in determining the outcome of a claim submission. One such denial code that healthcare providers often encounter is CO 109. Understanding the implications of this denial code and knowing how to resolve it are essential for ensuring smooth and efficient revenue cycle management.It all began with political correctness. “The denial of first amendment rights…led to the political violence that we saw yesterday.” That was how Jason Kessler, who organized last ...

The steps to address code 29, which indicates that the time limit for filing has expired, are as follows: Review the date of service: Verify the date of service for the claim in question. Ensure that it falls within the timely filing limit set by the payer. This information can usually be found in the payer's provider manual or on their website.CO 19 Denial Code – This is a work-related injury/illness and thus the liability of the Worker’s Compensation Carrier; CO 20 and CO 21 Denial Code; CO 23 Denial Code – The impact of prior payer(s) adjudication including payments and/or adjustments; CO 26 CO 27 and CO 28 Denial Codes; CO 31 Denial Code- Patient cannot be identified as our ...§ 11131 of the Bankruptcy Code,2 which governs rejection of col- ... Co.), 26 B.R. 765, 767. (Bankr. S.D.N.Y. 1983) ... rejection of the existing collective ...Denial of payment. This group includes the code N876, which is an informational RARC. This code allows the payer or facility to initiate an open negotiation for a higher out-of-network rate than that paid by the patient through cost sharing. Notice and consent. This group includes the codes N878 and N79, which are both informational …Stay In-Network: Whenever possible, participate in the insurance networks that your patients are part of. Being in-network reduces the likelihood of CO 97 denials due to out-of-network status. Accurate Coding and Documentation: Properly code and document all services provided to patients. Mistakes in coding or incomplete documentation can …CO 19 Denial Code – This is a work-related injury/illness and thus the liability of the Worker’s Compensation Carrier; CO 20 and CO 21 Denial Code; CO 23 Denial Code – The impact of prior payer(s) adjudication including payments and/or adjustments; CO 26 CO 27 and CO 28 Denial Codes; CO 31 Denial Code- Patient cannot be identified as our ...Remark Code N792 means that there is an incomplete or invalid history and physical report. This code is used to indicate the reason for denial or adjustment of a claim related to the documentation of a patient’s medical history and physical examination. 1. Description Remark Code N792 indicates that the history and physical report provided…MCR - 835 Denial Code List CO : Contractual Obligations - Denial based on the contract and as per the fee schedule amount. CO should be sent if the adjustment is related to the contracted and/or negotiated rate Provider’s charge either exceeded contracted or negotiated agreement (rate, maximum number of hours, days or units) with the payer, exceeded the reasonable and customary amount for ...

PI-22 Code – Resubmission Of Claim Denied. This code indicates that a previously denied claim has been resubmitted and denied again. PI-252 Code – Service Not Paid, Patient Is Not An Enrollee Of The Plan. This denial implies the patient isn't enrolled in the particular insurance plan billed. § 11131 of the Bankruptcy Code,2 which governs rejection of col- ... Co.), 26 B.R. 765, 767. (Bankr. S.D.N.Y. 1983) ... rejection of the existing collective ...2. Out-of-network providers: If the services were rendered by healthcare providers who are not part of the patient's insurance network, the claim may be denied with code 242. This can happen if the patient sought care from a specialist or facility that is not covered by their insurance plan. 3. Lack of medical necessity: Insurance companies may ...It all began with political correctness. “The denial of first amendment rights…led to the political violence that we saw yesterday.” That was how Jason Kessler, who organized last ... Remark New Group / Reason / Remark Healthy families partial month eligibility restriction, Date of Service must be greater than or equal to date of Date of Eligibility. CO/26/– and CO/200/– CO/26/N30 : Late claim denial. CO/29/– CO/29/N30 Aid code invalid for DMH. Aid code invalid for Medi-Cal specialty mental health billing. CO/31/– CO ...

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The four group codes you could see are CO, OA, PI, and PR . They will help tell you how the claim is processed and if there is a balance, who is responsible for it. The definition of each is: CO (Contractual Obligations) is the amount between what you billed and the amount allowed by the payer when you are in-network with them.Here, since the only orders entered were a temporary restraining order and an order denying a motion to dissolve the temporary order, the Union had no reason to ...Mar 18, 2024 · Denial Code Resolution. View the most common claim submission errors below. To access a denial description, select the applicable Reason/Remark code found on Noridian 's Remittance Advice. Select the Reason or Remark code link below to review supplier solutions to the denial and/or how to avoid the same denial in the future. Denial Code Resolution Non-Covered Charge Browse by Topic Advance Beneficiary Notice of Noncoverage (ABN) Appeals Claims Clinical Trials ... View reason code list, return to Reason Code Guidance page. Last Updated Dec 09 , 2023 Hidden. Contact 877-908-8431 IVR Guide Fax Us Mail Us Email Us ...

The steps to address code 29, which indicates that the time limit for filing has expired, are as follows: Review the date of service: Verify the date of service for the claim in question. Ensure that it falls within the timely filing limit set by the payer. This information can usually be found in the payer's provider manual or on their website. PR Meaning: Patient Responsibility (patient is financially liable). A provider is prohibited from billing a Medicare beneficiary for any adjustment amount identified with a CO group code, but may bill a beneficiary for an adjustment amount identified with a PR group code. For example, reporting of reason code 50 with group code PR (patient ...Remark Code N554 means that there is a missing, incomplete, or invalid family planning indicator. This code is used to indicate the reason for denial or adjustment of a claim related to family planning services. It is important to address this remark code to ensure accurate billing and reimbursement for these services. 1. Description Remark… This means that the submitted claim is missing information about a related or qualifying service necessary for proper adjudication. Common Reasons for the Denial CO 107: Missing or incorrect information about a related or qualifying service on the claim. Failure to include the appropriate procedure code (s) for the related or qualifying service ... Next Steps. You can address denial code 27 as follows: Verify Coverage Status: First, confirm the patient’s current coverage status with the insurance company. Ensure that the policy has indeed been terminated and that the denial under code 27 is accurate. Review Termination Date: Check the termination date provided by the insurance company ... EX Code CARC RARC DESCRIPTION Type EX*1 95 N584 DENY: SHP guidelines for submitting corrected claim were not followed DENY EX*2 A1 N473 DENY: ASSESSMENT, FILLING AND/OR DME CERTIFICATION NOT ON FILE DENY PR Meaning: Patient Responsibility (patient is financially liable). A provider is prohibited from billing a Medicare beneficiary for any adjustment amount identified with a CO group code, but may bill a beneficiary for an adjustment amount identified with a PR group code. For example, reporting of reason code 50 with group code PR (patient ... The CO16 denial code indicates that the claim lacks the necessary documentation or information needed for the insurance payer to assess its validity and process it accurately. The implications of the CO16 denial code are significant, as they directly impact your revenue cycle and reimbursement. CARCs, also known as claim adjustment reason codes can indicate claim denial reasons such as incomplete or incorrect information, services not covered under the patient’s plan, or exceeded limits of coverage. By using these codes, healthcare providers can understand why a claim was denied and take appropriate action to address any …The steps to address code 246 are as follows: Review the claim: Carefully examine the claim to ensure that all necessary information has been accurately documented. Check for any missing or incomplete details that may have triggered the non-payable code. Verify coding accuracy: Double-check the coding used for the services provided.PR - Patient Responsibility denial code list, PR 1 Deductible Amount PR 2 Coinsurance Amount PR 3 Co-payment Amount PR 204 This service/equipment/drug is not covered under the patient’s current benefit plan PR B1 Non-covered visits. PR B9 Services not covered because the patient is enrolled in a Hospice. We could bill the patient for this …

How to Address Denial Code 273. The steps to address code 273, which indicates that coverage/program guidelines were exceeded, are as follows: 1. Review the patient's insurance policy: Carefully examine the patient's insurance policy to understand the specific coverage and program guidelines that were exceeded.

There are two absolutes when it comes to medical claim submission. First, you’re going to receive denials. Second, a lot of those denials will contain denial code CO16. But overturning this type of denial isn't hard. The difficult aspect is managing all of them according to their attached RARC.Code 07. The procedure/revenue code is inconsistent with the patient’s gender. Code 08. The procedure code is inconsistent with the provider type/specialty (taxonomy). Code 09. The diagnosis is inconsistent with the patient’s age. Code 10. The diagnosis is inconsistent with the patient’s gender. Code 11.PR - Patient Responsibility denial code list, PR 1 Deductible Amount PR 2 Coinsurance Amount PR 3 Co-payment Amount PR 204 This service/equipment/drug is not covered under the patient’s current benefit plan PR B1 Non-covered visits. PR B9 Services not covered because the patient is enrolled in a Hospice. We could bill the patient for this …Payers deny your claim with code CO 11 when the diagnosis code you submitted on the claim doesn’t align with the procedure or service performed. This situation can arise for several reasons, such as: Making a typo in the diagnosis code. Using an incorrect diagnosis code. Submitting a diagnosis code that isn’t supported by the patient’s ...How to Address Denial Code 18. The steps to address code 18 are as follows: 1. Review the claim: Carefully examine the claim to ensure that it is indeed an exact duplicate of a previously submitted claim or service. Look for any discrepancies or errors that may have caused the claim to be flagged as a duplicate. 2.Why We Say, “I’m fine” When We Aren’t: Codependency, Denial, and Avoidance Im fine. We say it all t Im fine. We say it all the time. Its short and sweet. But, often, its not true. ...Remark Code N792 means that there is an incomplete or invalid history and physical report. This code is used to indicate the reason for denial or adjustment of a claim related to the documentation of a patient’s medical history and physical examination. 1. Description Remark Code N792 indicates that the history and physical report provided…Resolving CO 24 Denial Code issues is a crucial step in ensuring the smooth functioning of healthcare billing and coding processes. This section focuses on practical strategies and solutions to address CO 24 denials, helping healthcare providers and billing professionals navigate the intricacies of this code effectively.How to Address Denial Code 27. The steps to address code 27, which indicates expenses incurred after coverage terminated, are as follows: Review the patient's insurance coverage termination date: Verify the exact date when the patient's insurance coverage ended. This information can usually be found in the patient's insurance policy or by ...

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EX Code CARC RARC DESCRIPTION Type EX*1 95 N584 DENY: SHP guidelines for submitting corrected claim were not followed DENY EX*2 A1 N473 DENY: … At least one Remark Code must be provided (may be comprised of either the Remittance Advice Remark Code or NCPDP Reject Reason Code.) Reason Code 15: Duplicate claim/service. This change effective 1/1/2013: Exact duplicate claim/service . Reason Code 16: This is a work-related injury/illness and thus the liability of the Worker's Compensation ... Late claim denial. CO/29/– CO/29/N30 Aid code invalid for DMH. Aid code invalid for Medi-Cal specialty mental health billing. CO/31/– CO/31/– Invalid revenue code, procedure code, and modifier combination. CO/109/– and CO/199/– CO/96/N216 Invalid procedure code and modifier combination. CO/109/M51 : CO/96/N216 Service date cannot be laterReason codes appear on an EOB to communicate why a claim has been adjusted. If there is no adjustment to a claim/line, ... Reason Code 61: Denial reversed per Medical Review. Reason Code 62: Procedure code was incorrect. This payment reflects the correct code. Reason Code 63: Blood Deductible.Nov 14, 2021 · Payers will deny the claims with CO 26 Denial Code – Expenses incurred prior to coverage, whenever the providers perform health care services to patient prior to the insurance coverage starts. What steps needs to be taken? Review other claims in the application within a span of 30 days, to see if any claims were … Denial code 226 means that the information requested from the Billing/Rendering Provider was either not provided, not provided in a timely manner, or was insufficient or incomplete. In order to process the claim, at least one Remark Code must be provided. This diagnosis code must then be consistent and relevant for the medical services mentioned. If not, you will receive denial code CO 11. Oftentimes you receive this denial code because there’s a mistake in the coding. An incorrect diagnosis code is likely the culprit, so the first thing to do is to check for that.10 Jul 2020 ... Denial Code CO 27 occurs when expenses were incurred after the patient's coverage had been terminated, meaning that your practice provided ...How to Address Denial Code N56. The steps to address code N56 involve a multi-faceted approach to ensure accurate billing and compliance with coding standards. Begin by reviewing the patient's medical records and the services provided to confirm the accuracy of the procedure codes submitted. Cross-reference the date of service with the ...CO 19 Denial Code – This is a work-related injury/illness and thus the liability of the Worker’s Compensation Carrier; CO 20 and CO 21 Denial Code; CO 23 Denial Code – The impact of prior payer(s) adjudication including payments and/or adjustments; CO 26 CO 27 and CO 28 Denial Codes; CO 31 Denial Code- Patient cannot be identified as our ...Denial Code CO 47: Diagnosis Missing or Invalid . Insurances Company will be denying the claim with CO 47 Denial Code: This (these) diagnosis (es) is (are) not covered, missing, or are invalid, whenever the Diagnosis CPT code is not Valid or missing. Diagnosis Code is Invalid. The payer is indicating that one or more of the diagnosis … Denial code 192 is a non-standard adjustment code used by providers/payers to provide Coordination of Benefits information to another payer. It is used when the non-standard code cannot be mapped to an existing Claims Adjustment Reason Code for Deductible, Coinsurance, and Co-payment. ….

Payers deny your claim with code CO 11 when the diagnosis code you submitted on the claim doesn’t align with the procedure or service performed. This situation can arise for several reasons, such as: Making a typo in the diagnosis code. Using an incorrect diagnosis code. Submitting a diagnosis code that isn’t supported by the patient’s ...To ignore the legacy of slavery and discrimination requires a debilitating denial on the part of whites like me. Today’s racial wealth divide is an economic archeological marker, e...CO 29 is a denial code used in medical billing to signal issues when insurance receives the claim after the given time filing limit. The Timely filing limit is a time frame of submitting a claim to insurance in a time limit. The timely filling limit of a claim starts from the claim Date of Service. Timely filling limit of different payers are ...Common causes of code 26 are: 1. Lack of pre-authorization: The healthcare provider may have failed to obtain pre-authorization from the insurance company before providing the …How to Address Denial Code 251. The steps to address code 251 are as follows: 1. Review the attachment/documentation: Carefully examine the attachment or documentation that was submitted with the claim. Identify any missing or incomplete information that is required for claim processing. 2.CO-26: Expenses incurred prior to coverage. Action: Verify the date of service. If the service was indeed provided before the coverage start date, the patient may be responsible for the charge. How to Address Denial Code 256. The steps to address code 256, which indicates that the service is not payable per the managed care contract, are as follows: 1. Review the managed care contract: Carefully examine the contract between your healthcare organization and the managed care payer. Look for any specific clauses or provisions that may ... At least one Remark Code must be provided (may be comprised of either the Remittance Advice Remark Code or NCPDP Reject Reason Code.) Reason Code 15: Duplicate claim/service. This change effective 1/1/2013: Exact duplicate claim/service . Reason Code 16: This is a work-related injury/illness and thus the liability of the Worker's Compensation ...How to Address Denial Code 236. The steps to address code 236 are as follows: Review the claim details: Carefully examine the claim to identify the specific procedure or procedure/modifier combination that is causing the compatibility issue. Verify the National Correct Coding Initiative (NCCI) guidelines: Cross-reference the NCCI guidelines to ... Co26 denial code, The steps to address code 58 are as follows: 1. Review the claim details: Carefully review the claim to ensure that the place of service (POS) listed is accurate and appropriate for the treatment provided. Cross-reference the POS code with the payer's guidelines to confirm if any specific requirements or restrictions apply., View common reasons for Reason 16 and Remark Codes MA13, N265, and N276 denials, the next steps to correct such a denial, and how to avoid it in the future. Navigation. Skip to Content DME Jurisdiction A. CT, DE, MA, ME, MD, NH, NJ, NY, PA, RI, VT, Washington D.C. Contact Us ..., Per DHCS, an updated listing of NDC Codes will be published in May 2022. Providers may have received State denial s with code CO 26 N650 which indicates that, “This policy was not in effect for this date of loss. No coverage is available.” Based on SAPC’s investigation, this denial code was received for services where an expired NDC was used., Denial of payment. This group includes the code N876, which is an informational RARC. This code allows the payer or facility to initiate an open negotiation for a higher out-of-network rate than that paid by the patient through cost sharing. Notice and consent. This group includes the codes N878 and N79, which are both informational …, Remittance Advice Remark Codes (RARCs) are used to provide additional explanation for an adjustment already described by a Claim Adjustment Reason Code (CARC) or to …, CO-26: Expenses incurred prior to coverage. Action: Verify the date of service. If the service was indeed provided before the coverage start date, the patient may be responsible for the charge., Denial code 192 is a non-standard adjustment code used by providers/payers to provide Coordination of Benefits information to another payer. It is used when the non-standard code cannot be mapped to an existing Claims Adjustment Reason Code for Deductible, Coinsurance, and Co-payment., How to Address Denial Code 18. The steps to address code 18 are as follows: 1. Review the claim: Carefully examine the claim to ensure that it is indeed an exact duplicate of a previously submitted claim or service. Look for any discrepancies or errors that may have caused the claim to be flagged as a duplicate. 2., 3. Next Steps. To resolve Denial Code 23, follow these next steps: Review Prior Payer (s) Adjudication: Obtain the explanation of benefits (EOB) or remittance advice from the prior payer (s) to understand the specific details of their adjudication. This will help identify the reasons for the impact on the claim and guide the next steps for ..., How to Address Denial Code 236. The steps to address code 236 are as follows: Review the claim details: Carefully examine the claim to identify the specific procedure or procedure/modifier combination that is causing the compatibility issue. Verify the National Correct Coding Initiative (NCCI) guidelines: Cross-reference the NCCI guidelines to ..., Denial Code Resolution Non-Covered Charge Browse by Topic Advance Beneficiary Notice of Noncoverage (ABN) Appeals Claims Clinical Trials ... View reason code list, return to Reason Code Guidance page. Last Updated Dec 09 , 2023 Hidden. Contact 877-908-8431 IVR Guide Fax Us Mail Us Email Us ..., PR 201 Workers Compensation case settled. Patient is responsible for amount of this claim/service through WC “Medicare set aside arrangement” or other agreement. (Use group code PR). PR 204 This service/equipment/drug is not covered under the patient’s current benefit plan. PR B1 Non-covered visits., This denial can mean a multitude of things, but effectively, the claim as submitted or processed does not find a match in our claims system to render payment based upon a providers set up or agreement. The intent of the G18 denial should be for the following situations and is where the ex-code will remain:, 3971. Denial Code CO 16: Claim or Service Lacks Information which is needed for adjudication. Insurance will deny the claim with denial reason code CO 16 accompanied with remarks code, whenever claims submitted with missing, invalid or incorrect information. Denial reason code CO 16 states Claim/Service lacks information which is needed for ..., LCD/NCD Denials. The Remittance Advice will contain the following codes when this denial is appropriate. CO-50, CO-57, CO-151, N-115 - Medical Necessity: An ICD-9 code (s) was submitted that is not covered under a LCD/NCD. CMS houses all information for Local Coverage or National Coverage Determinations that have been established., Common causes of code 22 are: 1. Coordination of Benefits (COB): This denial code indicates that the patient has another insurance plan that should be billed first before the current claim. It could be that the patient has multiple insurance policies, such as primary and secondary coverage, and the primary insurer needs to be billed first., You've learned to code, but now what? You may have some basic skills, but you're not sure what to do with them. Here's how to choose and get started on your first real project. You..., How to Address Denial Code 243. The steps to address code 243, "Services not authorized by network/primary care providers," are as follows: Review the patient's insurance coverage: Verify that the patient's insurance plan requires authorization for the specific service in question. Check if the service is considered out-of-network or if a ..., How to Address Denial Code 261. The steps to address code 261 are as follows: 1. Review the patient's medical history: Carefully examine the patient's medical records to ensure that the procedure or service in question is indeed inconsistent with their history. Look for any relevant documentation that supports the medical necessity of the ... , Denial Code CO 97: An Ultimate Guide. Maria Mulgrew. June 22, 2023. In 2021, HealthCare.gov insurers denied nearly 17% of in-network claims. In other words, out of 291.6 million in-network claims, there were 48.3 million denied claims. That’s a lot of lost revenue. Some insurers even report denying nearly half of in-network claims!, M25, M26, M27 and 54 - Co surgeon denial codes, Beneficiary Liability on Denied Claims for Assistant, Co- surgeon and Team Surgeons, MSN message 23.10 which states “Medicare does not pay for a surgical assistant for this kind of surgery,” was established for denial of claims for assistant surgeons., Reason Code 12: The authorization number is missing, invalid, or does not apply to the billed services or provider. Reason Code 13: Claim/service lacks information which is needed for adjudication. At least one Remark Code must be provided (may be comprised of either the NCPDP Reject Reason Code, or Remittance Advice Remark Code that is not an ..., MCR - 835 Denial Code List CO : Contractual Obligations - Denial based on the contract and as per the fee schedule amount. CO should be sent if the adjustment is related to the contracted and/or negotiated rate Provider’s charge either exceeded contracted or negotiated agreement (rate, maximum number of hours, days or units) with the payer, …, Denial explanation code update Here at Amerigroup Iowa, Inc., we strive to be the best partner we can be, even in cases where we can’t reimburse on a claim and must deny the claim line(s). Over the years, it has become apparent that the below explanation code (ex-code) and claims adjustment reason code (CARC), Answer: ICD 10 diagnosis code – Z00.111 (Health exam for newborn, under 8-28 days old). Suppose if they have coded the claim with Z00.110 diagnosis code (Health exam for newborn, under 8 days old), claim will be denied with CO 9 Denial Code – The diagnosis code is inconsistent with the patient’s age. Now let us see examples for CO 10 ..., Remark Code N554 means that there is a missing, incomplete, or invalid family planning indicator. This code is used to indicate the reason for denial or adjustment of a claim related to family planning services. It is important to address this remark code to ensure accurate billing and reimbursement for these services. 1. Description Remark…, So what does CO 29 stand for? This code indicates that the provider sent a claim after the submission deadline. Any claims sent after the time frame set by the …, Code Number Remark Code Reason for Denial 1 Deductible amount. 2 Coinsurance amount. 3 Co-payment amount. 4 The procedure code is inconsistent with the modifier used, or a required modifier is missing. 4 M114 N565 HCPCS code is inconsistent with modifier used or a required modifier is missing, The steps to address code 59 are as follows: Review the claim details: Carefully examine the claim to ensure that all procedures and services billed are accurate and necessary. Verify if multiple procedures were performed during the same session or if concurrent procedures were conducted. Check for documentation: Review the medical records to ..., Advertisement ­The organizing group has to identify directors, a chief executive officer (who usually has to have past experience running a bank) and other executives. The integrit..., While a daughter was fighting a heroin addiction, her parents fought for insurance coverage for mental health and substance abuse. By clicking "TRY IT", I agree to receive newslett..., How to Address Denial Code 109. The steps to address code 109 are as follows: Review the payer/contractor information: Verify that the claim/service was indeed submitted to the correct payer/contractor. Double-check the payer/contractor details to ensure accuracy. Confirm the payer/contractor requirements: Check the specific requirements and ..., Denial Code CO 26: Insurance company will deny the claim with denial code CO 26, when policy of the patient is not effective at the time the service rendered. It means provider rendered the treatment prior patient coverage. For example: Consider patient is having Aetna insurance and took the treatment from doctor on 02/29/2023.