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 | |
|---|---|---|---|---|---|
| XA09 | PER HFS'S MEDICALLY UNLIKELY EDITS POLICY, TOTAL UNITS BILLED FOR THE PROCEDURE EXCEED THE ALLOWED … |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| XA11 | PROVIDER IS NOT ELIGIBLE TO BILL NON-OTP PROCEDURE CODE. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XA12 | NON-OTP PROVIDER IS NOT ELIGIBLE TO BILL PROCEDURE H0020. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XA13 | ONE OF THE LINE ITEM SERVICE DATES (ITEMSERVICEDATE) PROVIDED IS NOT VALID. |
N301
Missing/incomplete/invalid procedure date(s). |
CO | 16 | View → |
| XA14 | PACKAGED SERVICE |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA15 | SERVICE DATE IS OUTSIDE OF ACCEPTABLE DATE OF SERVICE |
N64
The 'from' and 'to' dates must be different. |
CO | 16 | View → |
| XA16 | CBSA CANNOT BE DETERMINED FOR THIS CLAIM |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA18 | INVALID PARTIAL EPISODE PAYMENT INDICATOR |
M56
Missing/incomplete/invalid payer identifier. |
CO | 16 | View → |
| XA19 | INVALID INITIAL PAYMENT INDICATOR |
M56
Missing/incomplete/invalid payer identifier. |
CO | 16 | View → |
| XA20 | INITIAL HALF PAYMENT WILL BE ZERO |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA21 | PROVIDER SPECIFIC RATE ZERO WHEN BLENDED PAY REQUESTED |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA22 | PATIENT HEIGHT MUST BE GREATER THAN 0. |
N359
Missing/incomplete/invalid height. |
CO | 16 | View → |
| XA23 | PATIENT WEIGHT MUST BE GREATER THAN 0. |
N207
Missing/incomplete/invalid weight. |
CO | 16 | View → |
| XA24 | CLAIM CONTAINS HCPCS NOT ON THE AMBULATORY PROCEDURE LISTING (APL) THAT MUST BILLED FEE FOR SERVICE |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA26 | EP MODIFIER IS REQUIRED FOR EPSDT CODES |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XA27 | OUTPATIENT SERVICES PERFORMED THREE DAYS PRIOR TO INPATIENT ADMISSION. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA28 | CPT/HCPCS IN PREVENTIVE SCHEDULE | — | CO | 44 | View → |
| XA29 | DENY TC MODIFIERS |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA30 | DME IS NOT COVERED IN PLACE OF SERVICE . |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XA31 | EFFECTIVE JANUARY 1, 2011, THE PURCHASE OPTION FOR CAPPED RENTAL ITEMS IS ONLY AVAILABLE FOR COMPLE… | — | CO | 16 | View → |
| XA32 | DME CODES IN CATEGORY CR ARE LIMITED TO 1 PER MONTH - SEE CLAIM IN HISTORY. |
N435
Exceeds number/frequency approved /allowed within time… |
CO | 151 | View → |
| XA34 | CPT-4 CODE 74740 IS NOT REIMBURSABLE IF PERFORMED WITHIN THREE MONTHS FOLLOWING A TUBAL OCCLUSION/T… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA35 | THIS REVENUE CODE REQUIRES A SPECIFIC AGE RANGE AND/OR GENDER . |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA36 | VALUE CODE IS REQUIRED FOR LTC CLAIM WITH TOB/TAXONOMY COMBINATION . | — | CO | 16 | View → |
| XA37 | THE DIAGNOSTIC PROCEDURE CODE BILLED BY A PHYSICIAN REQUIRES A 26 MODIFIER. MODIFIER 26 WAS ADDED T… |
N519
Invalid combination of HCPCS modifiers. |
CO | 16 | View → |
| XA38 | COVERAGE IS FOR 09-QUALIFIED MEDICARE BENEFICIARY (QMB) ONLY. | — | CO | 96 | View → |
| XA39 | LTC DIRECT BILLING GUIDELINES REQUIRES ADMIT DATE AND ADMIT HOUR BE PRESENT ON THE CLAIM. |
N46
Missing/incomplete/invalid admission hour. |
CO | 16 | View → |
| XA40 | PROCEDURE CODE 90899 IS ALL-INCLUSIVE AND ENCOMPASSES BOTH THE PROFESSIONAL AND FACILITY CHARGES FO… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| XA43 | AGE DIAGNOSIS RESTRICTION - INFANT (< 1 YEAR) |
N129
Not eligible due to the patient's age. |
CO | 7 | View → |
| XA44 | AGE DIAGNOSIS RESTRICTION - CHILD (< 19 YEARS) |
N129
Not eligible due to the patient's age. |
CO | 9 | View → |
| XA45 | AGE DIAGNOSIS RESTRICTION - ADOLESCENT (10 - 19 YEARS) |
N129
Not eligible due to the patient's age. |
CO | 9 | View → |
| XA46 | AGE DIAGNOSIS RESTRICTION - ADULT (20+ YEARS) |
N129
Not eligible due to the patient's age. |
CO | 9 | View → |
| XA49 | SMOKING CESSATION TREATMENT - FREQUENCY |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA50 | PSYCHOTHERAPY WITH MEDICAL EVALUATION AND MANAGEMENT IS NOT REIMBURSABLE FOR PROVIDER TYPE. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XA51 | INTERACTIVE COMPLEXITY PROCEDURE CODE MAY NOT BE BILLED AS A STAND-ALONE CODE OR WITH INAPPROPRIATE… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| XA52 | BRIDGE APPOINTMENT MUST BE BILLED ON HCFA CLAIM |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA53 | BRIDGE APPOINTMENT IS LIMITED TO ONE UNIT PER HOSPITALIZATION. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA54 | PROCEDURE TERMINATED FOR NON-MEDICAL REASONS | — | CO | 96 | View → |
| XA56 | THE DIAGNOSIS AND MODIFIER COMBINATION ARE INAPPROPRIATE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA57 | THE TOTAL UNITS OF EPOGEN MUST BE REPORTED USING VALUE CODE 68 AND/OR DOES NOT MATCH TOTAL UNITS BI… |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XA60 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA61 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA62 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA63 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA64 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA65 | DME SERVICE IS NOT COVERED BY CMS AS A RENTAL OR A PURCHASE WHEN THE ITEM HAS PREVIOUSLY BEEN PAID … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA66 | NPWT PUMP DRESSING KITS (A6550) REIMBURSEMENT IS LIMITED TO 15 PER MONTH. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA67 | NPWT PUMP CANISTER SETS (A7000) REIMBURSEMENT IS LIMITED TO 10 PER MONTH. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA68 | PROFESSIONAL RADIOLOGY SERVICES BILLED BY A PROVIDER OTHER THAN AN ANESTHESIOLOGIST, CARDIOLOGIST, … |
N95
This provider type/provider specialty may not bill thi… |
CO | 96 | View → |
| XA69 | CHIROPRACTIC SERVICE IS LIMITED TO 26 VISITS PER RECIPIENT PER 12 MONTH PERIOD. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | 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.