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 | |
|---|---|---|---|---|---|
| X96 | OBSERVATION DOES NOT MEET MINIMUM HOURS, QUALIFYING DIAGNOSES, AND/OR âTâ PROCEDURE CONDITIONS |
N443
Missing/incomplete/invalid total time or begin/end tim… |
CO | 16 | View → |
| X960 | WHEN THE DIAGNOSIS IS MULTIPLE GESTATION, TWIN PREGNANCY HAS A MAX UNIT RESTRICTION OF 2 PER DAY. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| X961 | WHEN THE DIAGNOSIS IS MULTIPLE GESTATION, TRIPLET PREGNANCY HAS A MAX UNIT RESTRICTION OF 3 PER DAY. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| X962 | WHEN THE DIAGNOSIS IS MULTIPLE GESTATION, QUADRUPLET/MULTIPLE PREGNANCY HAS A MAX UNIT RESTRICTION … |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| X963 | WHEN THE DIAGNOSIS IS MULTIPLE GESTATION, UNIT RESTRICTION FOR ULTRASOUNDS WITH TRIPLET PREGNANCY I… |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| X964 | WHEN THE DIAGNOSIS IS MULTIPLE GESTATION, UNIT RESTRICTION FOR ULTRASOUNDS WITH QUADRUPLET PREGNANC… |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| X965 | G0442 OR G0443 IS DENIED WHEN THE POS IS NOT 11, 22, 49, 50, 71 OR 72. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| X966 | G0442 IS DENIED WHEN BILLED BY ANY PROVIDER MORE THAN (1) UNIQUE VISIT PER YEAR. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X967 | G0443 IS DENIED WHEN WHEN BILLED BY ANY PROVIDER MORE THAN ONCE PER DATE OF SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X968 | G0443 IS DENIED WHEN WHEN BILLED BY ANY PROVIDER MORE THAN FOUR (4) UNIQUE VISITS PER YEAR. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 96 | View → |
| X969 | NUCLEAR MEDICINE PROCEDURES BILLED WITHOUT A RADIOPHARMACEUTICAL IMAGING AGENT ARE DENIED WITH BILL… |
MA30
Missing/incomplete/invalid type of bill. |
CO | 16 | View → |
| X97 | CODES G0378 AND G0379 ONLY ALLOWED WITH BILL TYPE 13X OR 85X |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| X970 | SERVICES THAT ARE INAPPROPRIATELY BILLED WITH ANATOMICAL MODIFIER WILL BE DENIED. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| X971 | REMOVE MODIFIER 26 AND TC FROM A PROCEDURE WHEN THE PROFESSIONAL/TECHNICAL COMPONENT CONCEPT DOES N… |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| X972 | MODIFIER IS INAPPROPRIATELY BILLED BY A PROFESSIONAL PROVIDER. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| X973 | DRUGS AND BIOLOGICALS ARE DENIED WHEN BILLED WITHOUT AN APPROVED ASC SURGICAL PROCEDURE FOR CLAIMS … |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| X974 | RADIOLOGY SERVICES ARE DENIED WHEN BILLED WITHOUT AN APPROVED ASC SURGICAL PROCEDURE ON CLAIMS WITH… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| X975 | 90-DAY SURGICAL PROCEDURES ARE DENIED WHEN BILLED WITHOUT MODIFIER 54 BY AN EMERGENCY MEDICINE PHYS… |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| X976 | LABORATORY SERVICES ARE DENIED WHEN BILLED IN PLACE OF SERVICE 21, 22, 23, 24 BY A PROVIDER WITH A … |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| X977 | 85060 IS DENIED WHEN NOT BILLED IN POS 21,22,23,51,52,61 OR 81. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| X978 | CPT G0443 IS DENIED WHEN G0442 HAS NOT BEEN BILLED IN THE PREVIOUS YEAR. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X979 | CARE PLAN OVERSIGHT SERVICES WHEN BILLED WITHIN THE SAME CALENDAR MONTH OF A MONTHLY ESRD SERVICES … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X98 | MULTIPLE CODES FOR THE SAME SERVICE | — | CO | P14 | View → |
| X980 | G0008, G0009, G0010 BILLED WITHOUT THE APPROPRIATE, CORRESPONDING VACCINE CODE WILL BE DENIED. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X981 | TYPE OF BILL 033X IS NO LONGER VALID FOR MEDICARE, EFFECTIVE OCTOBER 1, 2013 |
MA30
Missing/incomplete/invalid type of bill. |
CO | 16 | View → |
| 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 → |
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.