Remark Codes — Complete List & Lookup

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.

2,992

Total Remark Codes

Adjustment Groups

835

RA835 Mapped

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Looking for Denial Codes (CARC)?

Browse Claim Adjustment Reason Codes — the codes that explain why a payment was reduced or denied.

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Showing 1,601–1,650 of 2,992 remark codes

Remark Code	Description	RA835 Code	Group	Reason Code
X841	DENTAL SEALANT PER TOOTH - MAXIMUM UNITS PAYABLE = 8	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
X843	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 →
X844	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 →
X845	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 →
X846	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 →
X847	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 →
X848	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 →
X849	MODIFIER 51 SUBMITTED WITH AN ADD-ON PROCEDURE CODE WILL BE DENIED.	M20 Missing/incomplete/invalid HCPCS.	CO	4	View →
X85	INVALID REVENUE CODE	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X850	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 →
X851	CPT SPINAL ORTHOSIS PROCEDURES MUST BE BILLED WITH CG MODIFIER	N657 This should be billed with the appropriate code for th…	CO	4	View →
X852	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 →
X853	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 →
X854	EVALUATION AND MANAGEMENT SERVICES ARE NOT SEPARATELY PAYABLE WHEN BILLED WITH 93701 (BIOIMPEDANCE,…	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	16	View →
X855	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 →
X856	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 →
X857	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 →
X858	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 →
X859	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 →
X86	MULTIPLE MEDICAL VISITS ON SAME DAY WITH SAME REVENUE CODE WITHOUT CONDITION CODE G0	N657 This should be billed with the appropriate code for th…	CO	236	View →
X860	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 →
X861	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 →
X862	CORRECT NDC CODE REQUIRED.	M119 Missing/incomplete/invalid/ deactivated/withdrawn Nati…	CO	4	View →
X863	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 →
X864	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 →
X865	AN NDC CODE WITHOUT A CPT CODE IS NOT PERMITTED.	N657 This should be billed with the appropriate code for th…	CO	16	View →
X866	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 →
X867	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 →
X868	REVENUE CODE IS INVALID FOR LTC PROVIDER.	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X869	BEHAVIORAL HEALTH PROVIDER REQUIRES APPROPRIATE MODIFIER ON THE ENCOUNTER CODE.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X87	TRANSFUSION OR BLOOD PRODUCT EXCHANGE WITHOUT SPECIFICATION OF BLOOD PRODUCT	M84 Medical code sets used must be the codes in effect at …	CO	16	View →
X870	ENCOUNTER RATE CLINICS REQUIRE A DETAIL CODE.	N657 This should be billed with the appropriate code for th…	CO	16	View →
X871	ENCOUNTER RATE CLINICS SHOULD BE BILLED AS A SINGLE DATE OF SERVICE.	N130 Consult plan benefit documents/guidelines for informat…	CO	16	View →
X872	REIMBURSEMENT FOR THIS SERVICE IS INCLUDED IN THE FQHC VISIT (G CODE).	N130 Consult plan benefit documents/guidelines for informat…	CO	97	View →
X873	DASA MUST BE BILLED ON TYPE OF BILL 86X OR 89X	MA30 Missing/incomplete/invalid type of bill.	CO	282	View →
X874	INFERTILITY DIAGNOSES ARE NON COVERED FOR ILLINOIS MEDICAID	M64 Missing/incomplete/invalid other diagnosis.	CO	96	View →
X875	MATERNITY/ANTEPARTUM CODE IS CONSIDERED GLOBAL BY HFS	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X876	OCCURRENCE CODE 51 IS NO LONGER VALID. OCCURRENCE CODE 42 IS NOW REQUIRED.	M45 Missing/incomplete/invalid occurrence code(s).	CO	16	View →
X877	NON-COVERED SERVICE.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X878	THERAPY MODIFIER REDUCES TO PERCENTAGE OF THE ALLOWED AMOUNT.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X879	PROFESSIONAL CLAIM IS A POSSIBLE DUPLICATE OF CLAIM IN HISTORY.	—	CO	18	View →
X88	OBSERVATION REVENUE CODE ON LINE ITEM WITH NON-OBSERVATION HCPCS CODE	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X880	PROFESSIONAL CLAIM LINE IS A POSSIBLE DUPLICATE OF CLAIM LINE ID.	—	CO	18	View →
X881	OUTPATIENT CLAIM IS A POSSIBLE DUPLICATE OF CLAIM IN HISTORY.	—	CO	18	View →
X882	OUTPATIENT CLAIM LINE IS A POSSIBLE DUPLICATE OF CLAIM LINE IN HISTORY. (SAME CLAIM)	—	CO	18	View →
X883	OUTPATIENT CLAIM LINE IS A POSSIBLE DUPLICATE OF CLAIM LINE. (HISTORICAL CLAIM)	—	CO	18	View →
X884	INPATIENT CLAIM IS A POSSIBLE DUPLICATE OF CLAIM IN HISTORY.	—	CO	18	View →
X885	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 →
X886	DIAGNOSIS IS CONSIDERED AN ADDITIONAL CODE AND SHOULD NOT BE SUBMITTED AS PRIMARY.	MA63 Missing/incomplete/invalid principal diagnosis.	CO	16	View →
X887	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 →

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What is a Remark Code?

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.

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Remark Code vs. Denial Code

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.

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How to Use This List

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.