Browse all standardized Remark Codes (RARC) used on Medicare, Medicaid, and commercial payer remittance advice (835 ERA / EOB). Each code includes its RA835 mapping, adjustment group, reason code, and a dedicated resolution guide.
Browse Claim Adjustment Reason Codes — the codes that explain why a payment was reduced or denied.
| Remark Code | Description | RA835 Code | Group | Reason Code | |
|---|---|---|---|---|---|
| B8 | ALTERNATIVE SERVICES WERE AVAILABLE, AND SHOULD HAVE BEEN UTILIZED. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | B8 | View → |
| B9 | PATIENT IS ENROLLED IN A HOSPICE. | — | CO | B9 | View → |
| BCR | CLAIM HAS BEEN MISDIRECTED. FOR BEHAVIORAL HEALTH DATES OF SERVICE PRIOR TO 10/15/14 PLEASE SUBMIT… |
N418
Misrouted claim. See the payer's claim submission ins… |
CO | 109 | View → |
| BH3 | SERVICES LIMITED TO 3 UNITS PER DAY |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| BHCP | NON-CONTRACTED CODE. PLEASE CONTACT BHCP AT 1-855-481-7047 FOR QUESTIONS REGARDING YOUR CONTRACT A… |
M25
The information furnished does not substantiate the ne… |
CO | 16 | View → |
| BHF | MAXIMUM FREQUENCY ONE UNIT PER MEMBER PER DAY |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| BHUL | NON-CONTRACTED CODE |
M25
The information furnished does not substantiate the ne… |
CO | 16 | View → |
| BIER | CLAIM BILLED IN ERROR PER NOTIFICATION FROM PROVIDER, PLEASE DISREGARD. |
MA130
Your claim contains incomplete and/or invalid informat… |
CO | 129 | View → |
| BIL | BILLED CHARGES ARE INELIGIBLE AS A CORRECTED CLAIM/INFORMATION HAS BEEN RECEIVED. |
M86
Service denied because payment already made for same/s… |
CO | 96 | View → |
| BLOD | THE PLAN DOES NOT PROVIDE BENEFITS FOR ANY BLOOD, BLOOD DONORS, OR PACKED RED BLOOD CELLS WHEN PART… | — | CO | 66 | View → |
| BLT | PROCEDURE IS NOT VALID WHEN BILLED ON HCFA FORM OR WITH THE TYPE OF BILL CODE USED. |
MA30
Missing/incomplete/invalid type of bill. |
CO | 282 | View → |
| BP | CODE IS A BILATERAL PROCEDURE CODE, REIMBURSEMENT BASED ON BOTH SIDES BEING PERFORMED, CANNOT BE … |
M15
Separately billed services/tests have been bundled as … |
CO | 97 | View → |
| BPR | INCLUDED IN BPR, PER DIEM OR BUNDLE. |
N644
Reimbursement has been made according to the bilateral… |
CO | 59 | View → |
| BRAC | SERVICES REQUIRE BRACHYTHERAPY SEEDS/RADIOELEMENTS TO BE BILLED |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| BRC | BRACHYTHERAPY PROCDURE FOR THE APPLICATION MUST BE BILLED |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| BTD | OTHER MSO LIABILITY. | — | CO | 109 | View → |
| C978 | CLAIM HAS BEEN REPROCESSED TO REFLECT UPDATED PATIENT CREDIT FILE INFORMATION. |
N381
Alert: Consult our contractual agreement for restricti… |
CO | 3 | View → |
| CB | PRIMARY INSURANCE PAYMENT IS BEING DEDUCTED FROM THE NET PAYMENT, IF APPLICABLE. | — | CO | 45 | View → |
| CBST | PAYMENT MADE IN ACCORDANCE WITH STATE TITLE IV-D REQUIREMENTS. | N14 | CO | 100 | View → |
| CC01 | PLEASE SUBMIT THE LETTER OF CREDIBLE COVERAGE AND OR WRITTEN DOCUMENTATION FROM THE PRIMARY INSURAN… |
MA130
Your claim contains incomplete and/or invalid informat… |
CO | 16 | View → |
| CCEN | Cook County clinics are no longer enrolled as encounter clinics as of 4/1/2020. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 204 | View → |
| CCLM | CORRECTED CLAIM RECEIVED, NO ADDITIONAL BENEFITS ALLOWED | — | CO | 193 | View → |
| CCOP | CORRECTED CLAIM RECEIVED. CHARGES PREVIOUSLY CONSIDERED ON PRIOR CLAIM RESULTING IN AN OVERPAYMENT… |
MA67
Alert: Correction to a prior claim. |
CO | 129 | View → |
| CCR | CORRECTED CLAIM RECEIVED |
MA130
Your claim contains incomplete and/or invalid informat… |
CO | 129 | View → |
| CCS | CUSTODIAL CARE SERVICES ARE NOT COVERED UNDER THE PLAN. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 96 | View → |
| CHEM | CHEMO ADMIN MUST BE BILLED WITH APPROPRIATE CHEMO DRUG |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| CHIR | MAXIMUM FREQUENCY REACHED FOR CHIRO SERVICES. PREAUTH REQUIRED |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 197 | View → |
| CHLD | CLAIM HAS BEEN PUT ON ADMINISTRATIVE HOLD. CLAIM WILL BE CONSIDERED ONCE THE HOLD HAS BEEN REMOVED. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 96 | View → |
| CHNA | SERVICES DENIED. CHIROPRACTIC NOT AUTHORIZED. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 96 | View → |
| CLIN | RENDERING PROVIDER MUST PROVIDE CLINICAL INFORMATION FOR THESE SERVICES. |
M25
The information furnished does not substantiate the ne… |
CO | 16 | View → |
| CNC | CPT CODES BILLED ARE NOT COMPATIBLE WITH THE REVENUE CODES. PLEASE SUBMIT A CORRECTED BILL. |
M25
The information furnished does not substantiate the ne… |
CO | 16 | View → |
| CNIF | CLAIM DENIED PER OUTSTANDING REQUEST FOR FURTHER INFORMATION. PLEASE CONTACT OUR PROVIDER RELATION… |
M25
The information furnished does not substantiate the ne… |
CO | 26 | View → |
| CNP | CODE NOT ALLOWABLE PER PROVIDER CONTRACTED FEE SCHEDULE |
N448
This drug/service/supply is not included in the fee sc… |
CO | 96 | View → |
| COR | BENEFITS WERE COORDINATED WITH THE PRIMARY HEALTH CARE PLAN. | — | CO | 22 | View → |
| COSE | COSMETIC SERVICES/SURGERY ARE NOT COVERED UNDER THE PLAN. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 204 | View → |
| CPPD | CLAIM PROCESSED UNDER PLAN DIRECTED CARE |
N381
Alert: Consult our contractual agreement for restricti… |
CO | 45 | View → |
| CPRH | THIS CODE IS PENDING UNTIL RATES ARE PUBLISHED FROM HFS. CLAIMS WILL BE REPROCESSED WHEN THE RATE I… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| CPTR | CPT CODE ONLY PAYABLE WHEN BILLED WITH REV CODE 0657 |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| CR | CODE IS A COMPOUND PROCEDURE, PAYMENT INCLUDED WITH COMPREHENSIVE PROCEDURE CODE. |
M15
Separately billed services/tests have been bundled as … |
CO | 234 | View → |
| CR36 | CARDIAC REHAB SERVICES ARE LIMITED TO 36 VISITS. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| CRC | CLAIM HAS BEEN ADJUSTED DUE TO PREVIOUS PAYMENT MADE ON CLAIM(S) PRIOR TO THIS CORRECTED CLAIM HAVI… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| CSA | CORNEAL PROCEDURES NOT COVERED UNLESS BILLED WITH PROCEDURE INDICATING ACQUISITION OF THE CORNEAL T… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| CSCB | NO OTHER INSURANCE COVERAGE FOR DATE OF SERVICE. CLAIMS HAVE BEEN REPROCESSED. |
N245
Incomplete/invalid plan information for other insuranc… |
CO | 129 | View → |
| CSEX | SERVICES ARE LIMITED TO FOUR PER YEAR. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 119 | View → |
| D02 | DME SERVICE EXCEEDS QUANTITY LIMITS. SVC LIMITED TO 2 EVERY YEAR. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| D10 | DME SERVICE EXCEEDS QUANTITY LIMITS. SVC LIMITED TO 10 EVERY 60 DAYS. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| D100 | DIAGNOSIS CODE BILLED IS NOT VALID |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| D120 | DME SERVICE EXCEEDS QUANTITY LIMITS. SVC LIMITED TO 120 EVERY 30 DAYS. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| D15 | DME SERVICE EXCEEDS QUANTITY LIMITS. SVC LIMITED TO 15 PER 30 DAYS. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| D180 | DME SERVICE EXCEEDS QUANTITY LIMITS. SVC LIMITED TO 180 EVERY 30 DAYS. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
Remark Codes (RARC) are used on the 835 ERA and paper EOB to provide supplemental information about a claim adjustment. They always accompany a CARC (denial code) and clarify the reason for payment differences.
A Denial Code (CARC) explains why payment was adjusted. A Remark Code (RARC) provides additional context or instructions. Both appear together on remittance — look for the CARC first, then the RARC for detail.
Search by code number or keyword, or filter by adjustment group (CO, PR, OA…). Click any code to see its full RA835 mapping, common causes, step-by-step resolution guide, and appeal tips.