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 | |
|---|---|---|---|---|---|
| Y875 | MATERNITY/ANTEPARTUM CODE IS CONSIDERED GLOBAL BY HFS |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y876 | OCCURRENCE CODE 51 IS NO LONGER VALID. OCCURRENCE CODE 42 IS NOW REQUIRED. |
M45
Missing/incomplete/invalid occurrence code(s). |
CO | 16 | View → |
| Y877 | NON-COVERED SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y878 | THERAPY MODIFIER REDUCES TO PERCENTAGE OF THE ALLOWED AMOUNT. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y879 | PROFESSIONAL CLAIM IS A POSSIBLE DUPLICATE OF CLAIM IN HISTORY. | — | CO | 18 | View → |
| Y880 | PROFESSIONAL CLAIM LINE IS A POSSIBLE DUPLICATE OF CLAIM LINE ID. | — | CO | 18 | View → |
| Y881 | OUTPATIENT CLAIM IS A POSSIBLE DUPLICATE OF CLAIM IN HISTORY. | — | CO | 18 | View → |
| Y882 | OUTPATIENT CLAIM LINE IS A POSSIBLE DUPLICATE OF CLAIM LINE IN HISTORY. (SAME CLAIM) | — | CO | 18 | View → |
| Y883 | OUTPATIENT CLAIM LINE IS A POSSIBLE DUPLICATE OF CLAIM LINE. (HISTORICAL CLAIM) | — | CO | 18 | View → |
| Y884 | INPATIENT CLAIM IS A POSSIBLE DUPLICATE OF CLAIM IN HISTORY. | — | CO | 18 | View → |
| Y885 | THIS OP REVENUE CODE IS NOT ON THE LIST OF PAYABLE CODES SPECIFIED BY THE KENTUCKY MEDICAID BILLING… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y886 | DIAGNOSIS IS CONSIDERED AN ADDITIONAL CODE AND SHOULD NOT BE SUBMITTED AS PRIMARY. |
MA63
Missing/incomplete/invalid principal diagnosis. |
CO | 16 | View → |
| Y887 | DISCREPANCY IN COVERED DAYS (VALUE CODE 80) AND UNITS BILLED ON ROOM AND BOARD REVENUE CODES (0100-… |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| Y888 | CHALLENGE INGESTION FOOD TESTING WILL BE DENIED IF BILLED WITH INAPPROPRIATE DIAGNOSIS CODE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y889 | HYDROPHILIC CONTACT LENSES BILLED WITH ONLY NONDISEASED EYES WITH SPHERICAL AMETROPIA, REFRACTIVE A… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y890 | DENY 90935-90940 (HEMODIALYSIS) WHEN BILLED AND THE ONLY DIAGNOSIS ON THE CLAIM IS 295-295.95 (SCHI… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y891 | DIABETES SCREENING TESTS BILLED WITH DIAGNOSIS Z131 ARE LIMITED TO ONE PER YEAR OR ONE EVERY SIX MO… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y892 | APPLYING PURCHASE PRICE BASED ON 10 MONTH RENTAL POLICY. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y893 | ADVANCED KNEE, ANKLE AND FOOT PROSTHETICS ARE DENIED UNLESS BILLED WITH K0-K4 FUNCTIONAL MODIFIERS. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y894 | NEW PATIENT VISITS ARE DENIED WHEN ANY SERVICE HAS PREVIOUSLY BEEN BILLED BY SAME FACILITY WITHIN T… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y895 | E&M SERVICES ARE DENIED WHEN BILLED ON SAME DOS AS THERAPEUTIC APHERESIS SERVICES . |
N20
Service not payable with other service rendered on the… |
CO | 96 | View → |
| Y896 | A MAXIMUM OF 40 OCCURRENCES OF CPT 86003 (ALLERGEN SPECIFIC IGE; QUANTITATIVE OR SEMIQUANTITATIVE, … |
N435
Exceeds number/frequency approved /allowed within time… |
CO | 119 | View → |
| Y897 | ANTEPARTUM CARE BY SAME PROVIDER GROUP |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y898 | SPECIAL SERVICES BY EMERGENCY MEDICINE PROVIDER |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y899 | EXTERNAL COUNTERPULSATION (ECP) FOR SEVERE ANGINA - 1 |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y9 | THE OTHER DIAGNOSIS IS A DUPLICATE OF THE SECONDARY DIAGNOSIS |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y900 | ANNUAL DEPRESSION SCREENING (G0444) |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y901 | EXTERNAL COUNTERPULSATION (ECP) FOR SEVERE ANGINA - 2 |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y902 | IV HOME INFUSION WILL BE DENIED WHEN BILLED WITH MODIFIER SH OR SJ BUT THE CODE HAS NOT BEEN PREVIO… |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y903 | DME MODIFIER IS SUBJECT TO PERCTANGE OF THE ALLOWED PURCHASE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 4 | View → |
| Y904 | REIMBURSEMENT FOR AN ASSISTANT SURGEON WHEN BILLED BY THE PRIMARY SURGEON WILL BE DENIED. |
N450
Covered only when performed by the primary treating ph… |
CO | 54 | View → |
| Y905 | STATUS INDICATOR N - ITEMS AND SERVICES PACKAGED INTO APC RATES |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 44 | View → |
| Y906 | PROCEDURE IS UNRELATED TO THE PRINCIPAL DIAGNOSIS (APR-DRG) |
MA63
Missing/incomplete/invalid principal diagnosis. |
CO | 16 | View → |
| Y907 | IF A PROVIDER SPECIALTY OTHER THAN 69 (CLINICAL LABORATORY-BILLING INDEPENDENTLY) BILLS A CLAIM WIT… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y908 | NDC BILLED IS NOT IN THE PROPER FORMAT. THE NDC MUST BE 11 DIGITS. (LINE LEVEL DENIAL) |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
CO | 16 | View → |
| Y909 | NDC BILLED IS NOT IN THE PROPER FORMAT. THE NDC MUST BE 11 DIGITS. (CLAIM LEVEL DENIAL) |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
CO | 16 | View → |
| Y910 | DISCREPANCY IN COVERED DAYS (VALUE CODE 80) AND UNITS BILLED ON ROOM AND BOARD REVENUE CODES (0100… |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| Y911 | DASA CLAIM REQUIRES A VALID REVENUE CODE/HCPCS COMBINATION. |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 16 | View → |
| Y912 | PER HFS'S MEDICALLY UNLIKELY EDITS POLICY, TOTAL UNITS BILLED FOR PROCEDURE EXCEED THE ALLOWED UNI… |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| Y913 | VALUE CODE IS REQUIRED FOR PATIENTS LESS THAN 14 DAYS OLD. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| Y914 | CODE SHOULD BE MANUALLY PRICED WITH APPROPRIATE METHOD; 75% MSRP/ 120% COST. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 44 | View → |
| Y915 | CONDITION CODE 81 REQUIRES A DIAGNOSIS CODE SUPPORTING MEDICAL NECESSITY FOR EARLY ELECTIVE DELIVER… |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y916 | CONDITION CODE 82 REQUIRES A DIAGNOSIS CODE SUPPORTING MEDICAL NECESSITY FOR EARLY ELECTIVE DELIVER… |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y917 | REVENUE CODE MUST BE BILLED WITH PROCEDURE CODE. |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 16 | View → |
| Y918 | REVENUE CODE 905 OR 906 MAY NOT BE BILLED ON THE SAME DOS AS REVENUE CODE 513 â CLINIC-PSYCHIATRI… |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 16 | View → |
| Y919 | PROCEDURE CODE A0422 CANNOT BE BILLED WITH TRANSPORT CODES A0426, A0427, OR A0433. |
M20
Missing/incomplete/invalid HCPCS. |
CO | 16 | View → |
| Y920 | DME RENTAL EXCEEDS THE MAXIMUM ALLOWED MONTHLY RENTAL CAP. |
N370
Billing exceeds the rental months covered/approved by … |
CO | 96 | View → |
| Y921 | PER CMS GUIDELINES, THE PRESENCE OF MODIFIER INDICATES THAT ONLY ASSISTANT SURGERY COMPONENT SHOULD… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 44 | View → |
| Y922 | AMBULATORY EEG WILL BE DENIED WHEN A RESTING EEG HAS NOT BEEN BILLED BY ANY PROVIDER ON THE SAME DA… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y923 | ANTEPARTUM SERVICES BILLED WITH A DOS UP TO ONE WEEK FOLLOWING A DELIVERY WILL BE DENIED (EXCEPT MU… |
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.