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 | |
|---|---|---|---|---|---|
| Y825 | CPT CARE PLAN OVERSIGHT SERVICES WHEN BILLED WITHIN THE SAME CALENDAR MONTH OF A MONTHLY ESRD SERVI… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y826 | CPT (INJECTION, LEVOCARNITINE) MUST BE BILLED WITH APPROPRIATE DIAGNOSIS. |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y827 | PHYSICIAN RECERTIFICATION FOR HOME HEALTH SERVICES (G0179) IS DENIED IF BILLED MORE THAN ONCE EVERY… |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y828 | T1001 (NURSING ASSESSMENT EVALUATION) CANNOT BE BILLED MORE THAN ONCE A MONTH. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y829 | EXCISION/DESTRUCTION/CRYOTHERAPY OF BENIGN OR PREMALIGNANT SKIN LESIONS BILLED WITH INAPPROPRIATE P… |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| Y830 | EXCISION/DESTRUCTION/CRYOTHERAPY OF BENIGN OR PREMALIGNANT SKIN LESIONS BILLED WITH INAPPROPRIATE P… |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| Y831 | MAX OF ONE FECAL OCCULT BLOOD TEST CPT IS ALLOWED PER YEAR. |
M90
Not covered more than once in a 12 month period. |
CO | 151 | View → |
| Y832 | MAX OF ONE SIGMOIDOSCOPY OR BARIUM ENEMA CPT IS ALLOWED EVERY FOUR YEARS. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y833 | BARIUM ENEMA HIGH RISK ALTERNATIVE TO SCREENING COLONOSCOPY CPT IS NOT COVERED WHEN BILLED WITHOUT … |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y834 | WHEN THE DIAGNOSIS IS NOT MULTIPLE GESTATION, THE MAXIMUM UNIT ALLOWED FOR PROCEDURE IS 1 PER DAY. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y835 | WHEN THE DIAGNOSIS IS MULTIPLE GESTATION, ULTRASOUNDS HAVE MAXIMUM UNITS PER DAY RESTRICTIONS. |
M53
Missing/incomplete/invalid days or units of service. |
CO | 222 | View → |
| Y836 | CPT ADVANCED KNEES, ANKLES AND FEET WITHOUT AN APPROPRIATE K3 OR K4 FUNCTIONAL MODIFIER WILL BE DEN… |
N572
This procedure is not payable unless appropriate non-p… |
CO | 4 | View → |
| Y837 | MORE SPECIFIC CODING AVAILABLE |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y838 | PRIVATE DUTY NURSING WILL NOT EXCEED 96 UNITS PER 24 HOUR |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y839 | PRIVATE DUTY NURSING WILL NOT EXCEED 8000 UNITS PER CALENDAR YEAR |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y840 | DENTAL CODES HAVE A COVERAGE LIMIT OF ONCE PER YEAR |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y841 | DENTAL SEALANT PER TOOTH - MAXIMUM UNITS PAYABLE = 8 |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y842 | CHIROPRACTIC MANIPULATIVE TREATMENT BILLED MORE THAN ONCE PER DAY, WHEN BILLED BY ANY PROVIDER WILL… |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| Y843 | MOD 79 INDICATES A 2ND PROCEDURE BY SAME PHYS IS UNRELATED TO A PRIOR PROCEDURE, BUT NO PRIOR PROCE… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y844 | PROC BILLED WITH MOD 54, 55 OR 56 IS DENIED BECAUSE IT WAS BILLED PREVIOUSLY, WITHOUT A MODIFIER, O… |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y845 | MOD 76 INDICATES REPEAT PROCEDURE BY SAME PHYS, BUT NO PRIOR INSTANCE OF THIS PROCEDURE WAS FOUND (… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y846 | MOD 77 INDICATES A REPEAT PROCEDURE BY A DIFFERENT PHYS, BUT NO PRIOR INSTANCE OF THIS PROCEDURE WA… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y847 | MOD 77 INDICATES A REPEAT PROCEDURE BY A DIFFERENT PHYS. PROCEDURE {0} IS DENIED BECAUSE IT WAS BIL… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y848 | PROCS WITHOUT MOD 54, 55 OR 56 ARE DENIED WHEN SAME PROC WAS PREVIOUSLY BILLED BY ANOTHER PHYS WITH… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y849 | MODIFIER 51 SUBMITTED WITH AN ADD-ON PROCEDURE CODE WILL BE DENIED. |
M20
Missing/incomplete/invalid HCPCS. |
CO | 4 | View → |
| Y850 | CPT ADVANCED KNEES, ANKLES AND FEET WITHOUT AN APPROPRIATE K2, K3 OR K4 FUNCTIONAL MODIFIER WILL BE… |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y851 | CPT SPINAL ORTHOSIS PROCEDURES MUST BE BILLED WITH CG MODIFIER |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y852 | PROCEDURES WITH MODIFIER 55 OR 56, IN ADDITION TO MODIFIER 78, ARE DENIED. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y853 | DEVICE IS INTEGRAL TO A COVERED ASC SURGICAL PROCEDURE, BUT NO CORRESPONDING ASC SURGICAL PROCEDURE… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| Y854 | EVALUATION AND MANAGEMENT SERVICES ARE NOT SEPARATELY PAYABLE WHEN BILLED WITH 93701 (BIOIMPEDANCE,… |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| Y855 | E&M CODE IS NOT COVERED BY CMS WHEN BILLED IN A PLACE OF SERVICE ON CLAIM. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| Y856 | HOME HEALTH/HOME INFUSION PROCEDURE REQUIRES A VALID MODIFIER SS AND A VALID PLACE OF SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y857 | G0446 (ANNUAL, FACE-TO-FACE IBT FOR CVD) IS DENIED WHEN POS IS NOT 11, 22, 49, 50, 71, 72 |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| Y858 | SURGICAL AND MEDICAL SERVICE IS DENIED BECAUSE IT WAS BILLED WITHIN DAY GLOBAL POST OPERATIVE PERIO… |
N525
These services are not covered when performed within t… |
CO | 96 | View → |
| Y859 | ONLY ONE TECHNICAL COMPONENT FOR THE SAME SERVICE MAY BE BILLED. A SIMILAR SERVICE WAS BILLED ON CL… |
N522
Duplicate of a claim processed, or to be processed, as… |
CO | 18 | View → |
| Y860 | CPT 93701 (BIOIMPEDANCE, THORACIC, ELECTRICAL) IS DENIED WHEN BILLED ON THE SAME DATE OF SERVICE AS… |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y861 | CPT 93701 (BIOIMPEDANCE, THORACIC, ELECTRICAL) IS DENIED WHEN THE ONLY DIAGNOSIS ON THE CLAIM IS AO… |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 16 | View → |
| Y862 | CORRECT NDC CODE REQUIRED. |
M119
Missing/incomplete/invalid/ deactivated/withdrawn Nati… |
CO | 4 | View → |
| Y863 | HCPCS CODE IS NOT ON THE ASP DRUG SCHEDULE AND NDC IS NOT ON NOC SO THE CHARGE IS NOT COVERED. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| Y864 | INAPPROPRIATE CODING FOR CONTRACT AGREEMENT: HCPCS CATEGORY II CODE IS REQUIRED |
N657
This should be billed with the appropriate code for th… |
CO | 16 | View → |
| Y865 | AN NDC CODE WITHOUT A CPT CODE IS NOT PERMITTED. |
N657
This should be billed with the appropriate code for th… |
CO | 16 | View → |
| Y866 | DROP NCCI (VCE.49950/VCE.49951) FOR PROCEDURE CODES 59425 OR 59426 WITH APPROPRIATE MODIFIER. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y867 | PHYSICAL STATUS MODIFIER MUST BE THE FIRST MODIFIER ON THE CLAIM. |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y868 | REVENUE CODE IS INVALID FOR LTC PROVIDER. |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 16 | View → |
| Y869 | BEHAVIORAL HEALTH PROVIDER REQUIRES MODIFIER ON THE ENCOUNTER CODE . |
N657
This should be billed with the appropriate code for th… |
CO | 4 | View → |
| Y870 | ENCOUNTER RATE CLINICS REQUIRE A DETAIL CODE. |
N657
This should be billed with the appropriate code for th… |
CO | 16 | View → |
| Y871 | ENCOUNTER RATE CLINICS SHOULD BE BILLED AS A SINGLE DATE OF SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| Y872 | REIMBURSEMENT FOR THIS SERVICE IS INCLUDED IN THE FQHC VISIT (G CODE). |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| Y873 | DASA MUST BE BILLED ON TYPE OF BILL 86X OR 89X |
MA30
Missing/incomplete/invalid type of bill. |
CO | 282 | View → |
| Y874 | INFERTILITY DIAGNOSES ARE NON COVERED FOR ILLINOIS MEDICAID |
M64
Missing/incomplete/invalid other diagnosis. |
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.