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 | |
|---|---|---|---|---|---|
| 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 → |
| XG65 | CLAIMS SUBMITTED WITH STUDENT TAXONOMY 390200000X DO NOT QUALIFY FOR REIMBURSEMENT. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XH06 | JXXXX HCPCS CODE REQUIRES NDC TO BE PRESENT. |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
CO | 16 | View → |
| XH07 | IL MEDICAID CONTRACEPTIVE PILLS MUST BE BILLED WITH J8499 WITH DATES OF SERVICE ON OR AFTER JUNE 1,… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XH28 | THESE PHYSICIAN SERVICE CODES SHOULD BE BILLED TO PART B MAC OR DME, AS APPROPRIATE, FOR PAYMENT CO… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XH31 | STATEMENT THROUGH DATE CANNOT BE GREATER THAN THE DATE OF DEATH ON CLAIM. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XH39 | HFS REQUIRES THE APPROPRIATE MODIFIER AND CONDITION CODE AH WHEN REPORTING ABORTION SERVICES. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XH63 | IL MEDICAID CONTRACEPTIVE PILLS MUST BE BILLED WITH J8499 WITH DATES OF SERVICE ON OR AFTER JUNE 1 … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XH78 | INAPPROPRIATE BILLING- BILATERAL PROCEDURE CODE BILLED > 1 UNIT |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 151 | View → |
| XH82 | CLAIMS BILLED OUTSIDE OF POS 12 ARE NOT PAID |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| XI07 | VALUE CODE 80 IS REQUIRED WHEN REPORTING AN ESRD REVENUE CODE. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XI18 | A $10 per diem add-on should be applied to single occupancy rooms for Specialized Mental Health Reh… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XI27 | ONE SCREENING EVERY 6 MONTHS FOR MEDICARE BENEFICIARIES DIAGNOSED WITH PRE-DIABETES; LIMIT HAS BEEN… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XI29 | A NON-INDIVIDUAL PROVIDER IS EXPECTED TO BE BILLING INSTITUTIONAL TYPE OF BILL {BILLTYPE}. |
MA30
Missing/incomplete/invalid type of bill. |
CO | 16 | View → |
| XI40 | COVERAGE IS FOR 09-QUALIFIED MEDICARE BENEFICIARY (QMB) ONLY. (FACILITY) | — | CO | 96 | View → |
| XI44 | FEE FOR SERVICE PROVIDER IS REQUIRED TO BILL THE RENDERING PROVIDER TAXONOMY AS THE BILLING PROVIDE… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XI76 | WHEN A PATIENT IS TRANSFERRED WITHIN A GROUP PRACTICE SETTING, A NEW PATIENT PROCEDURE CODE IS NOT … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XI81 | CODE NOT ON AMBULATORY PROCEDURES LISTING (APL) AND IS SUBJECT TO FFS. LINE HAS BEEN CROSSWALKED TO… | — | CO | 45 | View → |
| XI94 | TAXONOMY 261QM2800X - METHADONE CLINIC CAN ONLY BILL H0020 - MEDICATION ASSISTED TREATMENT . |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XI95 | METHADONE CLINICS (TAXONOMY 261QM2800X) CANNOT BILL SERVICES OTHER THAN MEDICATION ASSISTED TREATME… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XJ37 | THIS PROVIDER IS NOT REGISTERED WITH COS 027, AND, THEREFORE, NOT ELIGIBLE FOR REIMBURSEMENT. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XJ45 | GT MODIFIER IS REQUIRED ON ALL LINES FOR THIS PROVIDER, IN THIS PLACE OF SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XJ76 | COVID-19 RELIEF 20% INCREASE ON CODE (SUPR) | — | CO | 45 | View → |
| XJ77 | COVID-19 RELIEF 20% INCREASE ON CODE. (METHADONE) | — | CO | 45 | View → |
| XJ78 | COVID-19 RELIEF 20% INCREASE ON CODE. (CMHC/BH) | — | CO | 45 | View → |
| XJ80 | CONDITION CODE DR IS MANDATORY FOR INSTITUTIONAL PROVIDERS IN BILLING SITUATIONS RELATED TO COVID-1… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | 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.