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 | |
|---|---|---|---|---|---|
| T829 | NCCI bundles a previously paid procedure into this procedure; Rec Amt has been adjusted accordingly | — | CO | 231 | View → |
| T830 | NCCI: The total units for this procedure on this claim for the same DOS are medically unlikely. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 222 | View → |
| T831 | NCCI: The total units for this procedure across claims for the same DOS are medically unlikely. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 222 | View → |
| T834 | NCCI: The total units for this procedure on this claim line for the same DOS are medically unlikely. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 222 | View → |
| T850 | This once-in-a-lifetime procedure was billed twice on this claim with different DOS. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 222 | View → |
| T851 | This once-in-a-lifetime procedure was previously billed for a different DOS. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 222 | View → |
| T860 | Per CCI, all types of repairs are included in benign lesion removals of 0.5 cm or less. |
M15
Separately billed services/tests have been bundled as … |
CO | 97 | View → |
| T861 | Per NCCI, an incidental appendectomy is not separately reportable. |
N122
Add-on code cannot be billed by itself. |
CO | 234 | View → |
| T865 | Per AAOS, this procedure is included in a more global procedure provided on the same DOS |
M15
Separately billed services/tests have been bundled as … |
CO | 97 | View → |
| T872 | Medicaid disallows this service with another service w/ same DOS, w/o a modifier |
N572
This procedure is not payable unless appropriate non-p… |
CO | 4 | View → |
| T873 | Medicaid disallows this service with another service w/ same DOS, with or w/o modifier |
N572
This procedure is not payable unless appropriate non-p… |
CO | 4 | View → |
| T874 | Medicaid disallows this service with a service billed on a diff claim, same DOS, w/o an approved mod |
N572
This procedure is not payable unless appropriate non-p… |
CO | 4 | View → |
| T875 | Medicaid disallows this service w/another service on a diff claim w/same DOS with or w/o a modifier |
N572
This procedure is not payable unless appropriate non-p… |
CO | 4 | View → |
| T876 | Medicaid bundles a previously paid service w/o a mod into this procedure; Rec Amt has been adjusted |
M15
Separately billed services/tests have been bundled as … |
CO | 97 | View → |
| T877 | Medicaid bundles previously paid service into this service; Rec amnt has been adjusted accordingly. |
M15
Separately billed services/tests have been bundled as … |
CO | 97 | View → |
| T981 | Service/procedure appears duplicative of a previously paid CMS1500 claim for the same DOS |
M86
Service denied because payment already made for same/s… |
CO | 97 | View → |
| T982 | This service/procedure is a duplicate of a previously paid UB claim for the same date of service. |
M86
Service denied because payment already made for same/s… |
CO | 97 | View → |
| T991 | Service/procedure appears duplicative of a previously reviewed CMS1500 claim for the same DOS |
M86
Service denied because payment already made for same/s… |
CO | 97 | View → |
| T992 | Service/procedure appears duplicative of a previously reviewed UB claim for the same date of service |
M86
Service denied because payment already made for same/s… |
CO | 97 | View → |
| T993 | This service/procedure appears to be a duplicate to another line on this professional claim. |
M86
Service denied because payment already made for same/s… |
CO | 97 | View → |
| TB01 | Per Phys Fee Schedule, payment is not allowed for this Status B code. | — | CO | 45 | View → |
| TC3 | THIS CLAIM HAS BEEN RETROACTIVELY DENIED, PENDING AN OUTSTANDING REQUEST FOR FURTHER DOCUMENTATION.… |
MA130
Your claim contains incomplete and/or invalid informat… |
CO | 129 | View → |
| TC3P | INSUFFICIENT DOCUMENTATION RECEIVED TO VERIFY SERVICES. | — | CO | 16 | View → |
| TD01 | THE BILLED SERVICE OR SUPPLY IS NOT SUPPORTED BY THE SUBMITTED DOCUMENTATION. | — | CO | 16 | View → |
| TEOB | PLEASE SUBMIT A COPY OF THE PRIMARY AND SECONDARY EOB'S. |
N479
Missing Explanation of Benefits (Coordination of Benef… |
CO | 16 | View → |
| TF | APPEAL DENIED THE DOCUMENTATION SUBMITTED DOES NOT PROVIDE EVIDENCE OF TIMELY FILING. | — | CO | 138 | View → |
| TFA | THE ISSUE OF NON TIMELY FILING MUST BE DIPUTED/APPEALED WITH THE PRIMARY INSURANCE CARRIER AS THEY … | — | CO | 138 | View → |
| TH60 | COMBINED THERAPY SERVICES (PT/OT/ST/RESPIRATORY/CARDIAC) LIMITED TO 60 VISITS PER YEAR. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 222 | View → |
| TH75 | COMBINED THERAPY SERVICES (PT/OT/ST/CARDIAC/RESPIRATORY) LIMITED TO 75 VISITS PER YEAR. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| THNA | SERVICES DENIED. THERAPY NOT AUTHORIZED. | — | CO | 197 | View → |
| TIN | PROVIDER BILLING WITH INVALID TIN. PLEASE SUBMIT CORRECTED BILLING. |
N289
Missing/incomplete/invalid rendering provider name. |
CO | 16 | View → |
| TMJX | TREATMENT FOR TMJ IS NOT COVERED UNDER THE PLAN. |
M25
The information furnished does not substantiate the ne… |
CO | 16 | View → |
| TN | TAX ID NUMBER NOT ON FILE FOR THIS PROVIDER |
N209
Missing/incomplete/invalid taxpayer identification num… |
CO | 16 | View → |
| TNA | SERVICES OVER 8 VISITS REQUIRE AUTHORIZATION. |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 197 | View → |
| TOB | TYPE OF BILL INVALID OR MISSING WITH REV CODES BILLED |
MA30
Missing/incomplete/invalid type of bill. |
CO | 282 | View → |
| TRA | CPT/HCPC CODE INAPPROPRIATELY SUBMITTED AND MAY BE REBUNDLED TO A DIFFERENT CODE. |
M15
Separately billed services/tests have been bundled as … |
CO | 234 | View → |
| TRAN | BLOOD PRODUCT MUST BE BILLED |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| TRC | TRANSPLANT RELATED CLAIM HAS BEEN MISDIRECTED. PLEASE SUBMIT CLAIM TO OPTUM FOR CONSIDERATION. OPT… |
N418
Misrouted claim. See the payer's claim submission ins… |
CO | 109 | View → |
| TRN | PA REQUIRED FOR EMERGENT TRANSPORT OVER 50 MILES ONE-WAY |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 197 | View → |
| TST | when 80050 is not billed on the same day as 99213 |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| TT01 | Per Phys Fee Sched, separate payment is disallowed for this code Status T code. | — | CO | 45 | View → |
| U58 | A CLAIM WAS RECEIVED FOR SERVICES THAT CANNOT BE BILLED BY THIS PROVIDER TYPE. |
N238
Incomplete/invalid physician certified plan of care. |
CO | B7 | View → |
| UBD | UNBUNDLED PROCEDURE. MORE APPROPRIATE CODE AVAILABLE. |
M15
Separately billed services/tests have been bundled as … |
CO | 234 | View → |
| UBF | FACILITY NOT ALLOWED TO BILL ON A UB CLAIM FORM |
N34
Incorrect claim form/format for this service. |
CO | 16 | View → |
| UC | PROCESSED ACCORDING TO USUAL AND CUSTOMARY. | — | CO | 59 | View → |
| UEX | PAYMENT ADJUSTED TO ALLOW NUMBER OF UNITS/VISITS APPROVED | — | CO | 45 | View → |
| UIC | UIC PROVIDER - TIN 376000511 - HANDLED BY DIFFERENT MSO. | — | CO | 109 | View → |
| UNLD | UNLISTED PROCEDURE CODE RECORDS REVIEWED, DENIAL UPHELD. | — | CO | 189 | View → |
| UNLI | PROCEDURE CODE IS AN UNLISTED CODE. PLEASE SUBMIT DOCUMENTATION FOR REVIEW OF PROCEDURE PERFORMED. … |
M20
Missing/incomplete/invalid HCPCS. |
CO | 16 | View → |
| UPSD | UNUSUAL PROCEDURE SERVICE REVIEWED AND DENIED. PLEASE SUBMIT ADDITIONAL DOCUMENTATION ON WHY THIS … |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 189 | 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.