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 2,251–2,300 of 2,992 remark codes

Remark Code	Description	RA835 Code	Group	Reason Code
Y627	CONDITION CODE 44 (INPATIENT ADMISSION CHANGED TO OUTPATIENT) CAN ONLY BE BILLED WITH BILL TYPES 01…	MA30 Missing/incomplete/invalid type of bill.	CO	5	View →
Y628	PER THE MEDICARE PHYSICIAN FEE SCHEDULE, PROCEDURE CODE DESCRIBES A PHYSICAL THERAPY SERVICES SUBMI…	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	5	View →
Y629	MODIFIER ON PROC CODE INDICATES A REDUCTION.	N546 Payment represents a previous reduction based on the E…	CO	45	View →
Y630	PER CMS POLICY, PROCEDURE CODE DESCRIBES HYPERTHERMIA SERVICES WHICH ARE ONLY COVERED WHEN BILLED I…	M84 Medical code sets used must be the codes in effect at …	CO	16	View →
Y631	(HOSPITAL DISCHARGE SERVICES) WAS BILLED ON PRIOR DAY ON CLAIM.	N522 Duplicate of a claim processed, or to be processed, as…	CO	18	View →
Y632	CO-SURGEONS COULD BE PAID, THOUGH SUPPORTING DOCUMENTATION IS REQUIRED TO ESTABLISH THE MEDICAL NEC…	N706 Missing documentation.	CO	163	View →
Y633	PER THE MEDICARE PHYSICIAN FEE SCHEDULE, PROCEDURE CODE DESCRIBES A PHYSICIAN INTERPRETATION FOR SE…	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	5	View →
Y634	PER CMS GUIDELINES, CO-SURGEON CLAIMS WHEN BOTH SURGEONS HAVE THE SAME SUBSPECIALTY FOR PROCEDURES …	N130 Consult plan benefit documents/guidelines for informat…	CO	204	View →
Y635	PER AMA GUIDELINES, INITIAL HOSPITAL OR BIRTHING CENTER CARE WILL BE DENIED WHEN THE NEWBORN HAS RE…	M84 Medical code sets used must be the codes in effect at …	CO	16	View →
Y636	ROOM & BOARD REVENUE CODES IN AN OUTPATIENT HOSPITAL SETTING	N676 Service does not qualify for payment under the Outpati…	CO	60	View →
Y637	DROP VCE.49953 (040CCO - MODIFIER 59)	N519 Invalid combination of HCPCS modifiers.	CO	16	View →
Y638	DROP VCE.49953 (040CCO COPY - MODIFIER TC)	N519 Invalid combination of HCPCS modifiers.	CO	16	View →
Y639	DROP VCE.21210 (PATIENT AGE GREATER THAN 70)	N129 Not eligible due to the patient's age.	CO	272	View →
Y640	DROP VCE.20603 (NPT - EXCLUDE PREVENTATIVE CODES)	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y641	DROP VCE.21205 (SUB 90680 - ADMIN CODES)	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y642	INSTITUTIONAL CLAIM IS A POSSIBLE DUPLICATE OF CLAIM .	N522 Duplicate of a claim processed, or to be processed, as…	CO	18	View →
Y643	PROCEDURE CODE IS A POSSIBLE DUPLICATE OF CLAIM LINE. PROCEDURE SHOULD BE BILLED IN THE SAME SERVIC…	N522 Duplicate of a claim processed, or to be processed, as…	CO	18	View →
Y644	PROCEDURE LINE IS A POSSIBLE DUPLICATE OF CLAIM. PROCEDURE CAN NOT BE BILLED ON SAME DOS WITH DIFFE…	N522 Duplicate of a claim processed, or to be processed, as…	CO	18	View →
Y645	INJECTIONS, LABS REPORTS, AND TESTS MUST BE BILLED WITH SPECIFIC PROCEDURE CODE ON ONE SERVICE SECT…	N381 Alert: Consult our contractual agreement for restricti…	CO	16	View →
Y646	THERAPY MUST BE BILLED WITH ONE SERVICE SECTION FOR EACH ITEM (PT, OT OR ST) OR SERVICE PROVIDED TO…	N381 Alert: Consult our contractual agreement for restricti…	CO	272	View →
Y647	MODIFIER 25/59 CAN NOT BE BILLED MULTIPLE TIMES FOR THE SAME SERVICE RENDERED ON THE SAME DOS.	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y648	PRICING MODIFIERS SHOULD NOT BE SUBMITTED MULTIPLE TIMES ON THE SAME PROCEDURE.	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y649	IMPROPER BILLING OF BILATERAL PROCEDURE. UNITS MUST BE 1.	M53 Missing/incomplete/invalid days or units of service.	CO	222	View →
Y650	AUDIOLOGY INPATIENT CHARGES ARE INCLUDED IN THE REIMBURSEMENT TO A HOSPITAL AND ARE NOT TO BE BILLE…	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y651	PROVIDER TAXONOMY CANNOT BILL IN PLACE OF SERVICE .	N288 Missing/incomplete/invalid rendering provider taxonomy.	CO	8	View →
Y652	DME SUPPLIERS CANNOT BILL IN PLACE OF SERVICE WHEN THE PATIENT IS 21 YEARS OR OLDER.	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	5	View →
Y653	REVENUE CODE INVALID FOR CATEGORY OF SERVICE.	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
Y654	OCCURRENCE CODE 50 IS NO LONGER VALID TO BYPASS PA FOR POST-DISCHARGE SERVICES. OCCURRENCE CODE 42 …	M45 Missing/incomplete/invalid occurrence code(s).	CO	16	View →
Y655	PROCEDCURE CODE CAN ONLY BE USED BY OUTPATIENT FACILITIES BILLED ON AN INSTUTIONAL CLAIM (C CODES)	M51 Missing/incomplete/invalid procedure code(s).	CO	16	View →
Y656	WHEN MULTIPLE GENERAL ANESTHESIA SERVICE CODES, ONLY THE HIGHEST SUBMITTED CHARGE AMOUNT WILL BE PA…	N634 The allowance is calculated based on anesthesia time u…	CO	59	View →
Y657	INCORRECT BILLING OF ASSISTANT SURGEON MODIFIERS FOR CRITICAL ACCESS PROFESSIONAL FEES REVENUE CODE…	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y658	INCORRECT BILLING OF CO-SURGEON MODIFIER FOR CRITICAL ACCESS PROFESSIONAL FEES REVENUE CODE.; REVEN…	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y659	C CODES CANNOT BE BILLED WITH REVENUE CODES REPRESENTING PROFESSIONAL FEES; REVENUE CODES 0960-0989.	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y660	DENY ROOM AND BOARD REVENUE CODES WHEN BILLED IN AN OUTPATIENT HOSPITAL SETTING.	N676 Service does not qualify for payment under the Outpati…	CO	60	View →
Y661	MEDICAL/SURGICAL SUPPLIES AND DME CANNOT BE BILLED WITH PROFESSIONAL FEE REVENUE CODES (0960-0989) …	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y662	FACILITY SHOULD NOT BILL OP CLAIM.	N676 Service does not qualify for payment under the Outpati…	CO	60	View →
Y663	FACILITY SHOULD NOT BILL IP CLAIM.	N130 Consult plan benefit documents/guidelines for informat…	CO	272	View →
Y664	PROSTHESIS BILLED WITH MODIFIER K0 OR KO WILL BE DENIED.	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y665	DME IS NOT ON THE CAPPED RENTAL LIST AND CANNOT BE BILLED WITH A RENTAL MODIFIER	N519 Invalid combination of HCPCS modifiers.	CO	16	View →
Y666	PROSTHESIS AND ORTHOSIS MUST BE BILLED WITH MODIFIERS LT OR RT	N519 Invalid combination of HCPCS modifiers.	CO	16	View →
Y667	CAPPED DME RENTAL IS NOT COVERED BY MEDICARE WHEN BILLED WITHOUT AN APPROPRIATE MODIFIER(RR,KI,KH O…	N519 Invalid combination of HCPCS modifiers.	CO	16	View →
Y668	DME SERVICE IS NOT COVERED BY CMS AS A RENTAL OR A PURCHASE WHEN THE ITEM HAS PREVIOUSLY BEEN PAID …	N522 Duplicate of a claim processed, or to be processed, as…	CO	18	View →
Y669	WHEEL CHAIR OR ACCESSORY IS NOT COVERED BY MEDICARE WHEN BILLED WITHOUT AN APPROPRIATE MODIFIER (KX)	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y670	CUSHIONS AND POSITIONING ACCESSORIES IS NOT COVERED BY MEDICARE WHEN BILLED WITHOUT AN APPROPRIATE …	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y671	HOSPITAL BED OR ACCESSORY IS NOT COVERED BY MEDICARE WHEN BILLED WITHOUT AN APPROPRIATE MODIFIER (K…	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y672	TOTAL ELECTRIC HOSPITAL BED IS NOT COVERED BY MEDICARE	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
Y673	WHEEL CHAIR OR ACCESSORY IS NOT COVERED BY MEDICARE WHEN BILLED WITHOUT AN APPROPRIATE MODIFIER (KX)	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y674	OXYGEN OR OXYGEN EQUIPMENT IS NOT COVERED WHEN BILLED MORE THAN ONCE PER MONTH	N640 Exceeds number/frequency approved/allowed within time …	CO	151	View →
Y675	OXYGEN RENTAL EQUIPMENT CPT IS NOT COVERED BY CMS WHEN BILLED WITHOUT RENTAL MODIFIER RR	N657 This should be billed with the appropriate code for th…	CO	4	View →
Y676	LARGE VOLUME ULTRASONIC NEBULIZER/ACCESSORIES ARE NOT COVERED BY CMS	N130 Consult plan benefit documents/guidelines for informat…	CO	96	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.