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 | |
|---|---|---|---|---|---|
| X935 | DME CODE BILLED WITHOUT A MODIFIER. | — | CO | 4 | View → |
| X936 | INTENSIVE BEHAVIORIAL THERAPY (IBT) FOR CARDIOVASCULAR DISEASE (CVD) (G0446) |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 59 | View → |
| X937 | PREVENTIVE AND SCREENING SERVICES - PROCEDURE FREQUENCY - 2 |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 96 | View → |
| X938 | PREVENTIVE AND SCREENING SERVICES - PROCEDURE FREQUENCY - 3 |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| X939 | PATIENT IS INCARCERATED |
N30
Patient ineligible for this service. |
CO | 258 | View → |
| X94 | NON-COVERED UNDER ANY MEDICARE OUTPATIENT BENEFIT, BASED ON STATUTORY EXCLUSION |
N584
Not covered based on the insured's noncompliance with … |
CO | 95 | View → |
| X940 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE SERVICES WERE PERFORMED. PER CMS, A REDUCTION APPLIES F… | — | CO | 45 | View → |
| X941 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE SURGERY SERVICES WERE PERFORMED. PER CMS, A REDUCTION A… | — | CO | 45 | View → |
| X942 | THIS PROCEDURE CODE NDICATES THAT MULTIPLE DIAGNOSTIC RADIOLOGY SERVICES WERE PERFORMED. PER CMS, A… | — | CO | 45 | View → |
| X943 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE DIAGNOSTIC CARDIOVASCULAR SERVICES WERE PERFORMED. PER … | — | CO | 45 | View → |
| X944 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE DIAGNOSTIC OPHTHALMOLOGY SERVICES WERE PERFORMED. PER C… | — | CO | 45 | View → |
| X946 | THIS PROCEDURE CODE IS A BASE ENDOSCOPIC PROCEDURE BILLED WITH OTHER ENDOSCOPIC PROCEDURES AND IS N… | — | CO | 97 | View → |
| X947 | TAXONOMY FOR NPI ON THIS CLAIM IS NOT COVERED BY MEDICARE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X948 | PER CCI GUIDELINES (INSTITUTIONAL), PROCEDURE CODE HAS BEEN BILLED OUT OF SEQUENCE WITH PROCEDURE C… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| X949 | PER CCI GUIDELINES (PHYSICIAN), PROCEDURE CODE HAS BEEN BILLED OUT OF SEQUENCE WITH PROCEDURE CODE … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| X95 | MULTIPLE OBSERVATIONS OVERLAP IN TIME (INACTIVE) |
N443
Missing/incomplete/invalid total time or begin/end tim… |
CO | 16 | View → |
| X950 | INVALID NDC TO PROCEDURE CODE COMBINATION. |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
CO | 16 | View → |
| X952 | A MULTIPLE PROCEDURE REDUCTION OF APPLIES TO THE PROCEDURE CODE. | — | CO | 45 | View → |
| X953 | AN NDC CODE IS REQUIRED WITH THIS PROCEDURE CODE. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| X954 | THIS NDC IS NOT ON FILE. PLEASE VERIFY THAT THE NDC WAS FILED CORRECTLY. |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
CO | 16 | View → |
| X955 | DISTINCT SERVICE MODIFIER IS NOT ALLOWED WITH THIS CPT. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| X956 | E/M SERVICES BILLED WITH THE SAME DIAGNOSIS GROUP, AND WITHIN THE 10- OR 90-DAY GLOBAL PERIOD OF A … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X957 | E/M SERVICE BILLED WITH PULMONARY FUNCTION TESTING WILL BE DENIED. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X958 | CPT 99477 IS DENIED WHEN NO NEONATAL CLAIMS WERE FOUND IN HISTORY WITH THIS ADMIT DATE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| X959 | G0442 OR G0443 IS DENIED WHEN PROVIDER SPECIALTY IS NOT GENERAL PRACTICE, FAMILY PRACTICE, INTERNAL… |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| 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 → |
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.