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 2,301–2,350 of 2,818 remark codes in group CO

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Remark Code	Description	RA835 Code	Group	Reason Code
Y800	REVENUE CODE INVALID FOR ILLINOIS MEDICAID HOSPITAL PROVIDERS	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
Y801	TAXONOMY REIMBURSES AT PERCENTAGE OF PHYSICIAN FEE SCHEDULE.	—	CO	45	View →
Y802	A MULTIPLE PROCEDURE REDUCTION APPLIES TO PROCEDURE CODE.	—	CO	45	View →
Y803	ASSISTANT SURGEON MODIFIER INDICATES A 20% REDUCTION OF THE STATE MAXIMUM SHOUD BE APPLIED.	—	CO	45	View →
Y804	ASSISTANT SURGEON MODIFIER NOT APPLICABLE FOR PROCEDURE CODE. LINE ITEM NOT REIMBURSED.	N519 Invalid combination of HCPCS modifiers.	CO	4	View →
Y805	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 →
Y806	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 →
Y807	DME CODE REQUIRES A PURCHASE OR RENTAL MODIFIER	N519 Invalid combination of HCPCS modifiers.	CO	4	View →
Y808	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 →
Y809	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 →
Y810	E/M SERVICE IS NOT PERMITTED IN THIS POS .	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	16	View →
Y811	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	96	View →
Y812	SURGICAL DRESSING MUST BE BILLED WITH A1-A9 MODIFIER	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y813	COLON CANCER SCREENING IS NOT COVERED FOR PATIENTS UNDER THE AGE OF 50.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
Y814	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 →
Y815	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 →
Y816	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 →
Y817	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 →
Y818	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 →
Y819	PHOTOPHERESIS, EXTRACORPOREAL BILLED WITHOUT A DIAGNOSIS FOR THE UNDERLYING CAUSE WILL BE DENIED.	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
Y820	PHOTOPHERESIS, EXTRACORPOREAL BILLED WITH GRAFT-VERSUS-HOST-DISEASE WITHOUT A DIAGNOSIS OF COMPLICA…	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
Y821	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 →
Y822	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 →
Y823	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 →
Y824	SERVICE INAPPROPRIATELY BILLED WITH TELEHEALTH SERVICE MODIFIER.	N657 This should be billed with the appropriate code for th…	CO	4	View →
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 →

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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.