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.
Browse Claim Adjustment Reason Codes — the codes that explain why a payment was reduced or denied.
| Remark Code | Description | RA835 Code | Group | Reason Code | |
|---|---|---|---|---|---|
| XB42 | PRACTITIONER BILLING ENCOUNTER CODE, NPI NOT ENROLLED AS FQHC/ERC/RHC. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB44 | EACH VACCINE/TOXOID PROCEDURE CODE MUST BE IMMEDIATELY FOLLOWED BY THE APPLICABLE ADMIN CODE(S) ON … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB49 | THERAPY SERVICES PREVIOUSLY PAID. |
M80
Not covered when performed during the same session/dat… |
CO | 97 | View → |
| XB51 | PROCEDURE CODE IS DATED OUTSIDE OF STATEMENT DATES . |
N56
Procedure code billed is not correct/valid for the ser… |
CO | 181 | View → |
| XB53 | VACCINE RESTRICTED TO AGE 9 THROUGH 26 YEARS. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB63 | INTERIM CLAIMS ARE NOT ALLOWED FOR HOSPITAL STAYS SUBJECT TO DRG PAYMENT METHODOLOGY. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB74 | OCCURRENCE CODE IS REQUIRED WHEN PATIENT IS EXPIRED. |
M45
Missing/incomplete/invalid occurrence code(s). |
CO | 16 | View → |
| XB75 | A GENERAL HOSPITAL (PROV TYPE 30) ELIGIBLE FOR INPATIENT PSYCH MUST BILL WITH ONE OF THESE TAXONOMY… |
N94
Claim/Service denied because a more specific taxonomy … |
CO | 16 | View → |
| XB76 | A GENERAL CARE HOSPITAL (PROV TYPE 30) NOT ENROLLED FOR IP PSYCH CAN ONLY BILL FOR 3 EMERGENCY DAYS… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB80 | A PSYCH HOSPITAL (PROV TYPE 31) MUST BILL AS IP PSYCH CARE. 273R00000X (PSYCHIATRIC UNIT) AND 283Q0… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB81 | MODIFIER IS SUBJECT TO A 50% REDUCTION |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB82 | DISCONTINUED PROCEDURE MODIFIER 53 REIMBURSES 25% OF ALLOWABLE | — | CO | 203 | View → |
| XB83 | POSTOPERATIVE MANAGEMENT ONLY MODIFIER 55 REIMBURSES 20% OF ALLOWABLE |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB84 | STAGED OR RELATED PROCEDURE OR SERVICE BY THE SAME PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESS… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB85 | REPEAT PROCEDURE OR SERVICE BY SAME PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL MODIFIER … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB86 | REPEAT PROCEDURE BY ANOTHER PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL MODIFIER 77 REIMB… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB87 | UNPLANNED RETURN TO THE OPERATING/PROCEDURE ROOM BY THE SAME PHYSICIAN OR OTHER QUALIFIED HEALTH CA… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB88 | UNRELATED PROCEDURE OR SERVICE BY THE SAME PHYSICIAN OR OTHER QUALIFIED HEALTH CARE PROFESSIONAL DU… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB89 | ASSISTANT SURGEON MODIFIER 80 REIMBURSES 16% OF ALLOWABLE |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB90 | MINIMUM ASSISTANT SURGEON MODIFIER 81 REIMBURSES 10% OF ALLOWABLE |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB91 | ASSISTANT SURGEON (WHEN QUALIFIED RESIDENT SURGEON NOT AVAILABLE) MODIFIER 82 REIMBURSES 20% OF ALL… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB92 | PHYSICIAN ASSISTANT, NURSE PRACTITIONER, OR CLINICAL NURSE SPECIALIST SERVICES FOR ASSISTANT AT SUR… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XB93 | ENCOUNTER CLINICS WITH BILLING PROVIDER TAXONOMY ON CLAIM CANNOT BILL IN THIS PLACE OF SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB97 | VACCINE RESTRICTED TO FEMALES AGE 9 THROUGH 25 YEARS. |
N129
Not eligible due to the patient's age. |
CO | 6 | View → |
| XB98 | A $35.00 DISPENSING IS FEE ALLOWED WHEN BILLED WITH THE UD MODIFIER FOR HIGHLY EFFECTIVE BIRTH CON… | — | CO | 91 | View → |
| XB99 | A $12.00 DISPENSING FEE IS ALLOWED FOR 340B ENROLLED PROVIDERS WHEN BILLED WITH THE UD MODIFIER. | — | CO | 91 | View → |
| XC00 | A 208.00 PER UNIT VENT ADD-ON APPLIES TO THIS SERVICE | — | CO | 91 | View → |
| XC01 | A $208.00 PER UNIT VENT ADD-ON APPLIES TO THIS SERVICE | — | CO | 91 | View → |
| XC17 | IL CODE IS SUBJECT TO A GLOBAL ADD ON OF 51.66 | — | CO | 91 | View → |
| XC18 | C68 ILLOGICAL PATIENT STATUS FOR BILLING STATUS. |
MA43
Missing/incomplete/invalid patient status. |
CO | 16 | View → |
| XC19 | VALUE CODES 80 AND 81 MUST EQUAL THE ROOM & BOARD DAYS AND STATEMENT DATES. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XC32 | INVALID PLACE OF SERVICE CODE BILLED FOR CMHC. REQUIRES POS 11,12 OR 99 |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XC33 | PROCEDURE CODE IS COVERED, BUT PROVIDER TAXONOMY IS NOT APPROPRIATE TO BILL SERVICE. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XC34 | PROCEDURE CODE IS COVERED, BUT IS NOT APPROPRIATE TO BILL SERVICE FOR PATIENT AGE. |
N129
Not eligible due to the patient's age. |
CO | 6 | View → |
| XC35 | PROCEDURE CODE IS COVERED, BUT IS NOT APPROPRIATE TO BILL SERVICE IN PLACE OF SERVICE. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 5 | View → |
| XC36 | PROCEDURE CODE IS COVERED, BUT IS NOT APPROPRIATE TO BILL SERVICE WITH/WITHOUT MODIFIERS. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XC37 | PROCEDURE CODE IS COVERED, BUT NOT EFFECTIVE FOR DATE OF SERVICE. |
N56
Procedure code billed is not correct/valid for the ser… |
CO | 16 | View → |
| XC40 | INVALID ADMIT DATE FOR INTERIM CLAIM |
MA40
Missing/incomplete/invalid admission date. |
CO | 16 | View → |
| XC49 | REVENUE CODE IS ONLY ALLOWED WHEN PROVIDER IS REGISTERED WITH COS |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XC54 | ANY VISIT LASTING TWO HOURS OR LESS WILL PAY AT A FLAT RATE. A VISIT LASTING OVER TWO HOURS PAYS A … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 97 | View → |
| XC64 | PROVIDER IS CONSIDERED A MID-LEVEL PROVIDER. PAYMENT IS REDUCED BY 25%. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 119 | View → |
| XC66 | ONLY INCIDENTAL SERVICES REPORTED |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XC82 | OCCURRENCE SPAN CODE 74 IS REQUIRED ON LTC CLAIMS WITH REVENUE CODES 0182, 0183 OR 0185 |
M45
Missing/incomplete/invalid occurrence code(s). |
CO | 16 | View → |
| XC83 | BED RESERVE BR HAS EXCEEDED 30 DAYS FOR THE FISCAL YEAR. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 119 | View → |
| XC98 | PAYMENT FOR THERAPEUTIC LEAVE SHALL NOT EXCEED 10 DAYS CONSECUTIVELY |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 119 | View → |
| XD52 | REVENUE CODE 183 FOR SMHRF IS REIMBURSED AT 75% OF CURRENT FACILITY RATE. | — | CO | 45 | View → |
| XD53 | ANESTHESIA PERFORMED BY BOTH AN ANESTHESIOLOGIST AND A CRNA FOR THE SAME PROCEDURE ON THE SAME PART… |
N706
Missing documentation. |
CO | 252 | View → |
| XD54 | DASA SERVICES ARE NOT ALLOWED IN THIS PLACE OF SERVICE. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| XD76 | SHINGLES 2 DOSE MAX IN LIFETIME |
N587
Policy benefits have been exhausted. |
CO | 35 | View → |
| XD77 | SHINGLES VACCINE ONLY FOR PATIENTS 50 YEARS OR OLDER |
M82
Service is not covered when patient is under age 50. |
CO | 6 | View → |
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.
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.
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.