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 1,651–1,700 of 2,992 remark codes

Remark Code	Description	RA835 Code	Group	Reason Code
X888	CHALLENGE INGESTION FOOD TESTING WILL BE DENIED IF BILLED WITH INAPPROPRIATE DIAGNOSIS CODE.	N130 Consult plan benefit documents/guidelines for informat…	CO	16	View →
X889	HYDROPHILIC CONTACT LENSES BILLED WITH ONLY NONDISEASED EYES WITH SPHERICAL AMETROPIA, REFRACTIVE A…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X89	INPATIENT SEPARATE PROCEDURES NOT PAID	M2 Not paid separately when the patient is an inpatient.	CO	96	View →
X890	DENY 90935-90940 (HEMODIALYSIS) WHEN BILLED AND THE ONLY DIAGNOSIS ON THE CLAIM IS SCHIZOPHRENIA.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X891	DIABETES SCREENING TESTS BILLED WITH DIAGNOSIS Z131 ARE LIMITED TO ONE PER YEAR OR ONE EVERY SIX MO…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X892	APPLYING PURCHASE PRICE BASED ON 10 MONTH RENTAL POLICY.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X893	ADVANCED KNEE, ANKLE AND FOOT PROSTHETICS ARE DENIED UNLESS BILLED WITH K0-K4 FUNCTIONAL MODIFIERS.	N657 This should be billed with the appropriate code for th…	CO	4	View →
X894	NEW PATIENT VISITS ARE DENIED WHEN ANY SERVICE HAS PREVIOUSLY BEEN BILLED BY SAME FACILITY WITHIN T…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X895	E&M SERVICES ARE DENIED WHEN BILLED ON SAME DOS AS THERAPEUTIC APHERESIS SERVICES .	N20 Service not payable with other service rendered on the…	CO	96	View →
X896	A MAXIMUM OF 40 OCCURRENCES OF CPT 86003 (ALLERGEN SPECIFIC IGE; QUANTITATIVE OR SEMIQUANTITATIVE, …	N435 Exceeds number/frequency approved /allowed within time…	CO	119	View →
X897	ANTEPARTUM CARE BY SAME PROVIDER GROUP	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X898	SPECIAL SERVICES BY EMERGENCY MEDICINE PROVIDER	N130 Consult plan benefit documents/guidelines for informat…	CO	16	View →
X899	EXTERNAL COUNTERPULSATION (ECP) FOR SEVERE ANGINA - 1	N130 Consult plan benefit documents/guidelines for informat…	CO	16	View →
X9	THE OTHER DIAGNOSIS IS A DUPLICATE OF THE SECONDARY DIAGNOSIS	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X90	PARTIAL HOSPITALIZATION CONDITION CODE 41 NOT APPROVED FOR TYPE OF BILL	M77 Missing/incomplete/invalid/inappropriate place of serv…	CO	5	View →
X900	ANNUAL DEPRESSION SCREENING (G0444)	N130 Consult plan benefit documents/guidelines for informat…	CO	16	View →
X901	EXTERNAL COUNTERPULSATION (ECP) FOR SEVERE ANGINA - 2	N130 Consult plan benefit documents/guidelines for informat…	CO	16	View →
X902	IV HOME INFUSION WILL BE DENIED WHEN BILLED WITH MODIFIER SH OR SJ BUT THE CODE HAS NOT BEEN PREVIO…	N657 This should be billed with the appropriate code for th…	CO	4	View →
X903	DME MODIFIER IS SUBJECT TO PERCTANGE OF THE ALLOWED PURCHASE.	N130 Consult plan benefit documents/guidelines for informat…	CO	4	View →
X904	REIMBURSEMENT FOR AN ASSISTANT SURGEON WHEN BILLED BY THE PRIMARY SURGEON WILL BE DENIED.	N450 Covered only when performed by the primary treating ph…	CO	54	View →
X905	STATUS INDICATOR N - ITEMS AND SERVICES PACKAGED INTO APC RATES	N130 Consult plan benefit documents/guidelines for informat…	CO	44	View →
X906	PROCEDURE IS UNRELATED TO THE PRINCIPAL DIAGNOSIS (APR-DRG)	MA63 Missing/incomplete/invalid principal diagnosis.	CO	16	View →
X907	IF A PROVIDER SPECIALTY OTHER THAN 69 (CLINICAL LABORATORY-BILLING INDEPENDENTLY) BILLS A CLAIM WIT…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X908	NDC BILLED IS NOT IN THE PROPER FORMAT. THE NDC MUST BE 11 DIGITS. (LINE LEVEL DENIAL)	M119 Missing/incomplete/invalid/ deactivated/withdrawn Nati…	CO	16	View →
X909	NDC BILLED IS NOT IN THE PROPER FORMAT. THE NDC MUST BE 11 DIGITS. (CLAIM LEVEL DENIAL)	M119 Missing/incomplete/invalid/ deactivated/withdrawn Nati…	CO	16	View →
X91	SERVICE IS NOT SEPARATELY PAYABLE	N390 This service/report cannot be billed separately.	CO	97	View →
X910	DISCREPANCY IN COVERED DAYS (VALUE CODE 80) AND UNITS BILLED ON ROOM AND BOARD REVENUE CODES.	M49 Missing/incomplete/invalid value code(s) or amount(s).	CO	16	View →
X911	DASA CLAIM REQUIRES A VALID REVENUE CODE/HCPCS COMBINATION.	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X912	PER HFS'S MEDICALLY UNLIKELY EDITS POLICY, TOTAL UNITS BILLED FOR PROCEDURE EXCEED THE ALLOWED UNI…	N362 The number of Days or Units of Service exceeds our acc…	CO	222	View →
X913	VALUE CODE IS REQUIRED FOR PATIENTS LESS THAN 14 DAYS OLD.	M49 Missing/incomplete/invalid value code(s) or amount(s).	CO	16	View →
X914	CODE SHOULD BE MANUALLY PRICED WITH APPROPRIATE METHOD; 75% MSRP/ 120% COST.	N130 Consult plan benefit documents/guidelines for informat…	CO	44	View →
X915	CONDITION CODE 81 REQUIRES A DIAGNOSIS CODE SUPPORTING MEDICAL NECESSITY FOR EARLY ELECTIVE DELIVER…	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X916	CONDITION CODE 82 REQUIRES A DIAGNOSIS CODE SUPPORTING MEDICAL NECESSITY FOR EARLY ELECTIVE DELIVER…	M64 Missing/incomplete/invalid other diagnosis.	CO	16	View →
X917	REVENUE CODE MUST BE BILLED WITH PROCEDURE CODE.	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X918	REVENUE CODE 905 OR 906 MAY NOT BE BILLED ON THE SAME DOS AS REVENUE CODE 513 â CLINIC-PSYCHIATRI…	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X919	PROCEDURE CODE A0422 CANNOT BE BILLED WITH TRANSPORT CODES A0426, A0427, OR A0433.	M20 Missing/incomplete/invalid HCPCS.	CO	16	View →
X92	REVENUE CENTER REQUIRES HCPCS	M20 Missing/incomplete/invalid HCPCS.	CO	16	View →
X920	DME RENTAL EXCEEDS THE MAXIMUM ALLOWED MONTHLY RENTAL CAP.	N370 Billing exceeds the rental months covered/approved by …	CO	96	View →
X921	PER CMS GUIDELINES, THE PRESENCE OF MODIFIER INDICATES THAT ONLY ASSISTANT SURGERY COMPONENT SHOULD…	N130 Consult plan benefit documents/guidelines for informat…	CO	44	View →
X922	AMBULATORY EEG WILL BE DENIED WHEN A RESTING EEG HAS NOT BEEN BILLED BY ANY PROVIDER ON THE SAME DA…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X923	ANTEPARTUM SERVICES BILLED WITH A DOS UP TO ONE WEEK FOLLOWING A DELIVERY WILL BE DENIED (EXCEPT MU…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X924	INITIAL INPATIENT HOSPITAL VISIT WILL BE DENIED IF ANY TYPE OF INPATIENT VISIT HAS BEEN BILLED IN T…	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X925	SERVICE IS NOT COVERED FOR URGENT CARE PROVIDER.	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X926	PEAK EXPIRATORY FLOW RATE BILLED WITH E/M OR PHYSICIAN SERVICE AND WITHOUT A DISTINCT SERVICES MODI…	N657 This should be billed with the appropriate code for th…	CO	4	View →
X928	RADIOLOGY CODES WITH A TC MODIFIER PAYMENT	N130 Consult plan benefit documents/guidelines for informat…	CO	96	View →
X93	SERVICE ON SAME DAY AS INPATIENT PROCEDURE	M2 Not paid separately when the patient is an inpatient.	CO	P14	View →
X930	INPATIENT CLAIMS REQUIRE VALID ROOM AND BOARD REVENUE CODES.	M50 Missing/incomplete/invalid revenue code(s).	CO	16	View →
X932	LIMITS 552 UNITS PER MONTH-S9122	M53 Missing/incomplete/invalid days or units of service.	CO	222	View →
X933	THE PROCEDURE WAS PRICED ACCORDING TO PARTIAL HOSPITALIZATION APPROXIMATION.	N130 Consult plan benefit documents/guidelines for informat…	CO	45	View →
X934	REVENUE CODES 510-529, OR ANY SUCCESSOR CODES, SHALL NOT BE REIMBURSED, UNLESS THERE IS A CONTRACTU…	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.