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 | |
|---|---|---|---|---|---|
| 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Missing/incomplete/invalid/ deactivated/withdrawn Nati… |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Missing/incomplete/invalid/ deactivated/withdrawn Nati… |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 → |
| Y924 | INITIAL INPATIENT HOSPITAL VISIT WILL BE DENIED IF ANY TYPE OF INPATIENT VISIT HAS BEEN BILLED IN T… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y925 | SERVICE IS NOT COVERED FOR URGENT CARE PROVIDER. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y926 | PEAK EXPIRATORY FLOW RATE BILLED WITH E/M OR PHYSICIAN SERVICE AND WITHOUT A DISTINCT SERVICES MODI… |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y928 | SUBMIT CHARGES TO MEDICAID FFS PROGRAM |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y929 | PRICE WITH CAPITATION | — | CO | 97 | View → |
| Y930 | INPATIENT CLAIMS REQUIRE VALID ROOM AND BOARD REVENUE CODES. |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 16 | View → |
| Y932 | LIMITS 552 UNITS PER MONTH-S9122 |
M53
Missing/incomplete/invalid days or units of service. |
CO | 222 | View → |
| Y933 | THE PROCEDURE WAS PRICED ACCORDING TO PARTIAL HOSPITALIZATION APPROXIMATION. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 45 | View → |
| Y934 | REVENUE CODES 510-529, OR ANY SUCCESSOR CODES, SHALL NOT BE REIMBURSED, UNLESS THERE IS A CONTRACTU… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y935 | DME CODE BILLED WITHOUT A MODIFIER. | — | CO | 4 | View → |
| Y936 | INTENSIVE BEHAVIORIAL THERAPY (IBT) FOR CARDIOVASCULAR DISEASE (CVD) (G0446) |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 59 | View → |
| Y937 | PREVENTIVE AND SCREENING SERVICES - PROCEDURE FREQUENCY - 2 |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y938 | PREVENTIVE AND SCREENING SERVICES - PROCEDURE FREQUENCY - 3 |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y939 | PATIENT IS INCARCERATED |
N30
Patient ineligible for this service. |
CO | 258 | View → |
| Y940 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE SERVICES WERE PERFORMED. PER CMS, A REDUCTION APPLIES F… | — | CO | 45 | View → |
| Y941 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE SURGERY SERVICES WERE PERFORMED. PER CMS, A REDUCTION A… | — | CO | 45 | View → |
| Y942 | THIS PROCEDURE CODE NDICATES THAT MULTIPLE DIAGNOSTIC RADIOLOGY SERVICES WERE PERFORMED. PER CMS, A… | — | CO | 45 | View → |
| Y943 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE DIAGNOSTIC CARDIOVASCULAR SERVICES WERE PERFORMED. PER … | — | CO | 45 | View → |
| Y944 | THIS PROCEDURE CODE INDICATES THAT MULTIPLE DIAGNOSTIC OPHTHALMOLOGY SERVICES WERE PERFORMED. PER C… | — | CO | 45 | View → |
| Y945 | THIS PROCEDURE CODE QUALIFIES FOR A MULTIPLE ENDOSCOPY REDUCTION AND PAYMENT SHOULD BE REDUCED TO B… | — | CO | 45 | View → |
| Y946 | THIS PROCEDURE CODE IS A BASE ENDOSCOPIC PROCEDURE BILLED WITH OTHER ENDOSCOPIC PROCEDURES AND IS N… | — | CO | 97 | View → |
| Y947 | TAXONOMY FOR NPI ON THIS CLAIM IS NOT COVERED BY MEDICARE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y948 | 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 → |
| Y949 | 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 → |
| Y950 | INVALID NDC TO PROCEDURE CODE COMBINATION. |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
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.