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 | |
|---|---|---|---|---|---|
| XB99 | A $12.00 DISPENSING FEE IS ALLOWED FOR 340B ENROLLED PROVIDERS WHEN BILLED WITH THE UD MODIFIER. | — | CO | 91 | View → |
| XC00 | A 208.00 PER UNIT VENT ADD-ON APPLIES TO THIS SERVICE | — | CO | 91 | View → |
| XC01 | A $208.00 PER UNIT VENT ADD-ON APPLIES TO THIS SERVICE | — | CO | 91 | View → |
| XC17 | IL CODE IS SUBJECT TO A GLOBAL ADD ON OF 51.66 | — | CO | 91 | View → |
| XC18 | C68 ILLOGICAL PATIENT STATUS FOR BILLING STATUS. |
MA43
Missing/incomplete/invalid patient status. |
CO | 16 | View → |
| XC19 | VALUE CODES 80 AND 81 MUST EQUAL THE ROOM & BOARD DAYS AND STATEMENT DATES. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XC32 | INVALID PLACE OF SERVICE CODE BILLED FOR CMHC. REQUIRES POS 11,12 OR 99 |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XC33 | PROCEDURE CODE IS COVERED, BUT PROVIDER TAXONOMY IS NOT APPROPRIATE TO BILL SERVICE. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XC34 | PROCEDURE CODE IS COVERED, BUT IS NOT APPROPRIATE TO BILL SERVICE FOR PATIENT AGE. |
N129
Not eligible due to the patient's age. |
CO | 6 | View → |
| XC35 | PROCEDURE CODE IS COVERED, BUT IS NOT APPROPRIATE TO BILL SERVICE IN PLACE OF SERVICE. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XC36 | PROCEDURE CODE IS COVERED, BUT IS NOT APPROPRIATE TO BILL SERVICE WITH/WITHOUT MODIFIERS. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XC37 | PROCEDURE CODE IS COVERED, BUT NOT EFFECTIVE FOR DATE OF SERVICE. |
N56
Procedure code billed is not correct/valid for the ser… |
CO | 16 | View → |
| XC40 | INVALID ADMIT DATE FOR INTERIM CLAIM |
MA40
Missing/incomplete/invalid admission date. |
CO | 16 | View → |
| XC49 | REVENUE CODE IS ONLY ALLOWED WHEN PROVIDER IS REGISTERED WITH COS |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XC54 | ANY VISIT LASTING TWO HOURS OR LESS WILL PAY AT A FLAT RATE. A VISIT LASTING OVER TWO HOURS PAYS A … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XC64 | PROVIDER IS CONSIDERED A MID-LEVEL PROVIDER. PAYMENT IS REDUCED BY 25%. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 119 | View → |
| XC66 | ONLY INCIDENTAL SERVICES REPORTED |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XC82 | OCCURRENCE SPAN CODE 74 IS REQUIRED ON LTC CLAIMS WITH REVENUE CODES 0182, 0183 OR 0185 |
M45
Missing/incomplete/invalid occurrence code(s). |
CO | 16 | View → |
| XC83 | BED RESERVE BR HAS EXCEEDED 30 DAYS FOR THE FISCAL YEAR. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 119 | View → |
| XC98 | PAYMENT FOR THERAPEUTIC LEAVE SHALL NOT EXCEED 10 DAYS CONSECUTIVELY |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 119 | View → |
| XD52 | REVENUE CODE 183 FOR SMHRF IS REIMBURSED AT 75% OF CURRENT FACILITY RATE. | — | CO | 45 | View → |
| XD53 | ANESTHESIA PERFORMED BY BOTH AN ANESTHESIOLOGIST AND A CRNA FOR THE SAME PROCEDURE ON THE SAME PART… |
N706
Missing documentation. |
CO | 252 | View → |
| XD54 | DASA SERVICES ARE NOT ALLOWED IN THIS PLACE OF SERVICE. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| XD76 | SHINGLES 2 DOSE MAX IN LIFETIME |
N587
Policy benefits have been exhausted. |
CO | 35 | View → |
| XD77 | SHINGLES VACCINE ONLY FOR PATIENTS 50 YEARS OR OLDER |
M82
Service is not covered when patient is under age 50. |
CO | 6 | View → |
| XD99 | DASA SERVICE IS ONLY ALLOWED IN PLACE OF SERVICE 03, 21, 22, 55, 57, AND 99. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XE00 | DASA SERVICE IS ONLY ALLOWED IN PLACE OF SERVICE 03, 21, 22, 55, 57, OR 99. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XE17 | PSYCHIATRIC CLINIC TYPE B SERVICES MUST BE BILLED WITH REVENUE CODE 912 OR 913. |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 16 | View → |
| XE18 | FOR SERVICE DATES BEGINNING 1/1/17, ALL OBSERVATION/0762 CLAIMS RECEIVED BY THE DEPARTMENT MUST BE … |
M20
Missing/incomplete/invalid HCPCS. |
CO | 16 | View → |
| XE52 | PROVIDER CANNOT BILL ENCOUNTER CODE T1015 |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XE53 | DISCREPANCY IN VALUE CODE 80 UNITS AND DASA UNITS. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XE85 | HCPCS CODE DOES NOT HAVE AN ASSIGNED RATE ON THE DME SCHEDULE. PLEASE SUBMIT THE M.S.R.P. OR MANUF… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XF05 | REPAIR OF BENEFICIARY-OWNED DME EQUIPMENT OVERLAPS THE DATES OF SERVICE FOR RENTAL OF A MULTI-FUNCT… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XF10 | HOSPICE VALUE CODE IS MISSING OR INVALID. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XF30 | INVALID BIRTH WEIGHT |
N207
Missing/incomplete/invalid weight. |
CO | 16 | View → |
| XF31 | GESTATIONAL AGE/BIRTH WEIGHT CONFLICT, I.E., BIRTH WEIGHT IS NOT REASONABLE FOR THE GESTATIONAL AGE… |
N207
Missing/incomplete/invalid weight. |
CO | 16 | View → |
| XF32 | THIS SERVICE IS NOT BILLABLE ON THE INSTITUTIONAL CLAIM FORMAT. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XF54 | CERTAIN BIOLOGICALS AND RADIOPHARMACEUTICALS CODES REQUIRE SUBMISSION OF THE ACTUAL INVOICE AMOUNT. |
M23
Missing invoice. |
CO | 252 | View → |
| XF61 | NPI(S) IS NOT VALID. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XF65 | PERCUTANEOUS IMAGE-GUIDED LUMBAR DECOMPRESSION (PILD) PROCEDURE CODE 0275T OR G0276 ARE ONLY PAYABL… |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| XF66 | REVIEW NON-TRANSPORT AMBULANCE CLAIM. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XF68 | ALLOWED AMOUNT IS GREATER THAN BILLED CHARGES. | — | CO | 45 | View → |
| XF74 | EMERGENCY DEPARTMENT REVENUE CODE 452 OR 459 IS NOT ALLOWED WITH CURRENT HCPC CODE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XF83 | HFS REQUIRES THE APPROPRIATE MODIFIER AND CONDITION CODE AH WHEN REPORTING ABORTION SERVICES. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XG01 | ANOTHER E&M CODE WAS BILLED ON THE SAME DATE OF SERVICE. PLEASE ATTACH MODIFIER 25 OR SPLIT E&M COD… |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| XG32 | COVERED DAYS (VALUE CODE 80) DOES NOT EQUAL THE TREATMENT DAYS REPORTED AS REVENUE CODES 821, 829, … |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XG43 | CPT CODE MUST HAVE MODIFIER QW TO BE RECOGNIZED AS A WAIVED TEST. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| XG46 | ACT AND CST SERVICES MUST BE BILLED WITH AN ADDITIONAL MODIFIER INDICATING THE PRACTITIONER LEVEL D… |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| XG51 | HCPCS J0604 OR J0606 REQUIRES MODIFIER AX. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XG52 | MODIFIER AX IS PRESENT WITHOUT HCPCS CODE J0604 OR J0606. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | 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.