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 1,401–1,450 of 2,818 remark codes in group CO

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Remark Code	Description	RA835 Code	Group	Reason Code
X773	CELLULAR THERAPY IS A NON-COVERED SERVICE.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X774	PROLOTHERAPY IS A NON-COVERED SERVICE.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X775	EDETATE DISODIUM, AND ITS RELATED ADMINISTRATIOM IS A NON-COVERED SERVICE.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X776	LUMBAR ARTIFICIAL DISC REPLACEMENT IS NOT COVERED WHEN PATIENT'S IS GREATER THAN 60 YEARS.	N129 Not eligible due to the patient's age.	CO	6	View →
X777	WHEELCHAIR SEATING CODE BILLED IS NON-COVERED.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X778	E/M SERVICES BILLED WITH CRITICAL CARE SERVICE WILL BE DENIED.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X779	DIAGNOSTIC ENDOCARDIAL ELECTRICAL STIMULATION IS NOT COVERED BY CMS WHEN BILLED WITHOUT AN APPROPRI…	M76 Missing/incomplete/invalid diagnosis or condition.	CO	50	View →
X78	PARTIAL HOSPITALIZATION CLAIM SPANS MORE THAN 3 DAYS WITH INSUFFICIENT NUMBER OF DAYS MEETING PARTI…	—	CO	16	View →
X780	APPLICATION OF MODALITY TO ONE OR MORE AREAS; ELECTRICAL STIMULATION ; EACH 15 MINUTES IS NOT COVER…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X781	ELECTRICAL STIMULATION/THERAPY IS NOT COVERED BY CMS IF BILLED IN NON-COVERED PLACE OF SERVICE.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X782	HYPERBARIC OXYGEN REQUIRES A VALID DIAGNOSIS	M76 Missing/incomplete/invalid diagnosis or condition.	CO	16	View →
X783	NON-PHYSICIANS BILLING WITH MODIFIERS 80, 81 OR 82 WILL BE DENIED.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X784	PER MEDICARE'S ANATOMICAL MEDICALLY UNLIKELY EDITS POLICY, TOTAL UNITS BILLED FOR PROCEDURE WITH AN…	N362 The number of Days or Units of Service exceeds our acc…	CO	222	View →
X785	LABOR & DELIVERY SERVICE IS NOT COVERED BY CMS WHEN BILLED IN CONJUNCTION WITH GLOBAL PACKAGE VIA C…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X786	C-SECTION DELIVERY SERVICE IS NOT COVERED BY CMS WHEN BILLED MORE THAN ONCE ON THE SAME DATE OF SER…	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
X787	PER CMS GUIDELINES, CO-SURGEON CLAIMS REQUIRE A VALID MODIFIER 62. REVIEW HISTORICAL CLAIM BILLED .	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X788	PER CMS GUIDELINES, TEAM-SURGEON CLAIMS REQUIRE A VALID MODIFIER 66. REVIEW HISTORICAL CLAIM BILLED	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X789	PER AMA GUIDELINES, INITIAL NEONATAL AND PEDIATRIC CRITICAL CARE WILL BE DENIED WHEN THE PATIENT HA…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X79	ONLY MENTAL HEALTH EDUCATION AND TRAINING SERVICES PROVIDED	—	CO	96	View →
X790	PROFESSIONAL RADIOLOGY SERVICES BILLED BY A PROVIDER OTHER THAN AN ANESTHESIOLOGIST, CARDIOLOGIST, …	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X791	DURABLE MEDICAL EQUIPMENT OVER $300 REQUIRES PRE AUTH.	N758 Adjusted based on the prior authorization decision.	CO	197	View →
X792	DROP MEDICALLY UNLIKELY EDIT FOR EXCLUDED MODIFIER.	N657 This should be billed with the appropriate code for th…	CO	96	View →
X793	DROP MODIFIER 26 REQUIREMENT WHEN POS IS 24.	N657 This should be billed with the appropriate code for th…	CO	96	View →
X794	DROP BUNDLED SERVICE EDIT FOR PROCEDURE CODE 99050.	M15 Separately billed services/tests have been bundled as …	CO	97	View →
X795	A MULTIPLE PROCEDURE REDUCTION OF APPLIES TO PROCEDURE CODE.	—	CO	45	View →
X796	ANESTHESIA CODE REQUIRES AN APPROPRIATE MODIFIER.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X797	REVENUE CODE REQUIRES PROCEDURE CODE.	N657 This should be billed with the appropriate code for th…	CO	16	View →
X798	CLINIC VISIT SHOULD BE BILLED ON PROFESSIONAL CLAIM	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X8	THE PRINCIPAL DIAGNOSIS IS A DUPLICATE OF THE SECONDARY DIAGNOSIS	N702 Decision based on review of previously adjudicated cla…	CO	18	View →
X80	EXTENSIVE MENTAL HEALTH SERVICES PROVIDED ON DAY OF TYPE T PROCEDURE	M51 Missing/incomplete/invalid procedure code(s).	CO	181	View →
X800	REVENUE CODE INVALID FOR ILLINOIS MEDICAID HOSPITAL PROVIDERS	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X801	TAXONOMY REIMBURSES AT PERCENTAGE OF PHYSICIAN FEE SCHEDULE.	—	CO	45	View →
X802	A MULTIPLE PROCEDURE REDUCTION APPLIES TO PROCEDURE CODE.	—	CO	45	View →
X803	ASSISTANT SURGEON MODIFIER INDICATES A 20% REDUCTION OF THE STATE MAXIMUM SHOUD BE APPLIED.	—	CO	45	View →
X804	ASSISTANT SURGEON MODIFIER NOT APPLICABLE FOR PROCEDURE CODE. LINE ITEM NOT REIMBURSED.	N519 Invalid combination of HCPCS modifiers.	CO	4	View →
X805	ALLOWANCES FOR SURGERY PERFORMED UNDER THE SURGICAL TEAM CONCEPT WILL BE DETERMINED ON A BY REPORT …	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X806	TEAM SURGERY MODIFIER NOT APPLICABLE FOR PROCEDURE CODE. LINE ITEM NOT REIMBURSED.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X807	DME CODE REQUIRES A PURCHASE OR RENTAL MODIFIER	N519 Invalid combination of HCPCS modifiers.	CO	4	View →
X808	PROCEDURE CODE 01996 (DAILY MANAGEMENT OF EPIDURAL OR SUBARACHNOID DRUG ADMINISTRATION) CANNOT BE B…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X809	SACRAL NERVE NEUROTRANSMITTER IMPLANT BILLED WITH A VOIDING DYSFUNCTION DIAGNOSIS IS DENIED WHEN A …	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X81	TERMINATED BILATERAL PROCEDURE OR TERMINATED PROCEDURE WITH UNITS GREATER THAN ONE	N430 Procedure code is inconsistent with the units billed.	CO	115	View →
X810	E/M SERVICE IS NOT PERMITTED IN THIS POS .	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	16	View →
X811	ONLY ONE E&M CODE IS ALLOWED PER DOS PER FACILITY FOR THE SAME REVENUE CODE. A HIGHER-DOLLAR-APC E&…	N519 Invalid combination of HCPCS modifiers.	CO	4	View →
X812	SURGICAL DRESSING MUST BE BILLED WITH A1-A9 MODIFIER	N657 This should be billed with the appropriate code for th…	CO	4	View →
X813	COLON CANCER SCREENING IS NOT COVERED FOR PATIENTS UNDER THE AGE OF 50.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X814	E&M SERVICE BILLED ON THE SAME DATE AS ELECTROMYOGRAPHY, NERVE CONDUCTION TESTS OR REFLEX TESTS WIL…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X815	EVALUATION AND MANAGEMENT SERVICES BILLED THE SAME DATE AS ACUPUNCTURE SERVICES WILL BE DENIED.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X816	INITIAL MEDICATION THERAPY MANAGEMENT SERVICE FOR A NEW PATIENT BILLED WITHIN A YEAR OF A PREVIOUS …	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X817	INPATIENT ONLY, NON-SEPARATE PROCEDURE CPT BILLED BY PROFESSIONAL PROVIDERS WITH ANY PLACE OF SERVI…	M2 Not paid separately when the patient is an inpatient.	CO	97	View →
X818	G0446 (ANNUAL, FACE-TO-FACE IBT FOR CVD) IS LIMITED TO ONE (1) UNIQUE VISIT PER YEAR.	M90 Not covered more than once in a 12 month period.	CO	151	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.