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 1,551–1,600 of 2,992 remark codes

Remark Code	Description	RA835 Code	Group	Reason Code
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 →
X819	PHOTOPHERESIS, EXTRACORPOREAL BILLED WITHOUT A DIAGNOSIS FOR THE UNDERLYING CAUSE WILL BE DENIED.	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X82	INCONSISTENCY BETWEEN IMPLANTED DEVICE OR ADMINISTERED SUBSTANCE AND IMPLANTATION OR ASSOCIATED PRO…	M51 Missing/incomplete/invalid procedure code(s).	CO	236	View →
X820	PHOTOPHERESIS, EXTRACORPOREAL BILLED WITH GRAFT-VERSUS-HOST-DISEASE WITHOUT A DIAGNOSIS OF COMPLICA…	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X821	TAPE (A4450, A4452) IS DENIED WHEN BILLED WITHOUT MODIFIERS AU, AV, AW, AX.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X822	OSTEOGENESIS STIMULATORS DESCRIBED BY HCPCS CODES E0747, E0748, AND E0760 ARE CLASSIFIED AS CLASS I…	N657 This should be billed with the appropriate code for th…	CO	4	View →
X823	DIAGNOSTIC SERVICES OR OP NON-REHABILITATION SERVICES BILLED WITH THERAPY SERVICES MODIFIERS WILL B…	N657 This should be billed with the appropriate code for th…	CO	4	View →
X824	SERVICE INAPPROPRIATELY BILLED WITH TELEHEALTH SERVICE MODIFIER.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X825	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 →
X826	CPT (INJECTION, LEVOCARNITINE) MUST BE BILLED WITH APPROPRIATE DIAGNOSIS.	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X827	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 →
X828	T1001 (NURSING ASSESSMENT EVALUATION) CANNOT BE BILLED MORE THAN ONCE A MONTH.	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
X829	EXCISION/DESTRUCTION/CRYOTHERAPY OF BENIGN OR PREMALIGNANT SKIN LESIONS BILLED WITH INAPPROPRIATE P…	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	16	View →
X83	MUTUALLY EXCLUSIVE PROCEDURE THAT WOULD BE ALLOWED BY NCCI IF APPROPRIATE MODIFIER WERE PRESENT	N519 Invalid combination of HCPCS modifiers.	CO	4	View →
X830	EXCISION/DESTRUCTION/CRYOTHERAPY OF BENIGN OR PREMALIGNANT SKIN LESIONS BILLED WITH INAPPROPRIATE P…	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	16	View →
X831	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 →
X832	MAX OF ONE SIGMOIDOSCOPY OR BARIUM ENEMA CPT IS ALLOWED EVERY FOUR YEARS.	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
X833	BARIUM ENEMA HIGH RISK ALTERNATIVE TO SCREENING COLONOSCOPY CPT IS NOT COVERED WHEN BILLED WITHOUT …	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X834	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 →
X835	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 →
X836	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 →
X837	MORE SPECIFIC CODING AVAILABLE	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X838	PRIVATE DUTY NURSING WILL NOT EXCEED 96 UNITS PER 24 HOUR	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
X839	PRIVATE DUTY NURSING WILL NOT EXCEED 8000 UNITS PER CALENDAR YEAR	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
X84	CODE2 OF A CODE PAIR THAT WOULD BE ALLOWED BY NCCI IF APPROPRIATE MODIFIER WERE PRESENT	M86 Service denied because payment already made for same/s…	CO	97	View →
X840	DENTAL CODES HAVE A COVERAGE LIMIT OF ONCE PER YEAR	N640 Exceeds number/frequency approved/allowed within time …	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.