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 | |
|---|---|---|---|---|---|
| X982 | BLANK DRG |
N208
Missing/incomplete/invalid DRG code. |
CO | 16 | View → |
| X983 | CLAIMS CONTAINING A MIXTURE OF ADMINISTRATIVE DAYS AND ANY OTHER REVENUE CODE WILL BE DENIED. |
N658
The billed service(s) are not considered medical expen… |
CO | 212 | View → |
| X984 | MEDI-CAL DOES NOT ALLOW ADDITIONAL REVENUE CODES FOR REHABILITATION CLAIMS. REHABILITATION REVENUE … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X985 | CLAIM DOES NOT CONTAIN THE APPROPRIATE ER AND OBSERVATION AND PSYCHIATRIC CLINIC SERVICES FOR ILLIN… |
M52
Missing/incomplete/invalid 'from' date(s) of service. |
CO | 16 | View → |
| X986 | DISCREPANCY IN SERVICE DATES AND UNITS BILLED ON REIMBURSABLE DASA PROCEDURE CODE. |
M52
Missing/incomplete/invalid 'from' date(s) of service. |
CO | 16 | View → |
| X987 | DASA CLAIM REQUIRES BILL TYPE 86X OR 89X. BILL TYPE ON CLAIM IS INVALID. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| X988 | THIS REVENUE CODE REQUIRES A CPT CODE. |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| X989 | MAJOR PROCEDURE BILLED IN THE PROVIDER'S OFFICE WHEN ANOTHER PROVIDER HAS ALREADY BILLED THIS PROCE… |
M86
Service denied because payment already made for same/s… |
CO | 151 | View → |
| X99 | NON-REPORTABLE FOR SITE OF SERVICE |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 5 | View → |
| X990 | PROVIDER BILLED A GLOBAL RADIOLOGY PROCEDURE CODE FOR A DIAGNOSTIC TEST WITH A PLACE OF SERVICE OTH… |
N517
Resubmit a new claim with the requested information. |
CO | 4 | View → |
| X991 | PROCEDURES BILLED WITH MODIFIER 26 ON A UB FORM ARE DENIED, UNLESS REV CODE IS 960-989. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| X992 | NEWBORN SERVICES CPT WILL BE DENIED WHEN BILLED UNDER THE MOTHER'S SUBSCRIBER ID. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X993 | DENY SERVICES INCLUDED IN THE GLOBAL OBSTETRICAL PACKAGE FOR UNCOMPLICATED MATERNITY WHEN BILLED ON… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X994 | DRG FOR THIS CLAIM IS NOT DEFINED |
N208
Missing/incomplete/invalid DRG code. |
CO | 16 | View → |
| X995 | PER CMS GUIDELINES, THE PRESENCE OF MODIFIER INDICATES THAT ONLY ASSISTANT SURGERY COMPONENT SHOULD… | — | CO | 45 | View → |
| X996 | OFFICE VISIT INITIAL CPT IS LIMITED TO ONE VISIT PER MEMBER, PER PROVIDER WITHIN THE LAST 3 YEARS. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| X997 | ESSURE IMPLANT DEVICE (A4264) IS LIMITED TO ONCE PER LIFETIME, PER MEMBER. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| X998 | PROCEDURE CODE IS NOT COVERED PER HFS GUIDELINES OR NOT ELIGIBLE FOR SEPARATE REIMBURSEMENT. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA01 | ONLY ONE UNIT OF H0020 IS ALLOWED PER DAY FOR REIMBURSEMENT. |
M53
Missing/incomplete/invalid days or units of service. |
CO | 222 | View → |
| XA02 | 90832-90838 MUST BE BILLED WITH MODIFIER SC WHEN BILLED WITH H0020. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XA03 | ONLY ONE PSYCHIATRIC DIAGNOSTIC INTERVIEWS IS ALLOWED PER RECIPIENT, PER BILLING PROVIDER, PER ROLL… |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA04 | CLAIM LINE IS NOT BILLED IN ACCORDANCE WITH HFS GUIDELINES. REBILL THE CLAIM WITH AN APPROPRIATE BI… |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XA05 | INAPPROPRIATE SPECIFICATION OF BILATERAL PROCEDURE |
N657
This should be billed with the appropriate code for th… |
CO | 16 | View → |
| XA07 | THIS PROVIDER SPECIALTY (261QR0200X - RADIOLOGY CLINIC) IS REQUIRED TO BILL ON HCFA |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA08 | SUBMIT CHARGES TO MEDICAID FFS PROGRAM. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| 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 → |
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.