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 | |
|---|---|---|---|---|---|
| XA72 | PROPER MODIFIERS NOT BILLED TO ALLOW REIMBURSEMENT FOR ASSISTANT SURGEON AT A TEFRA HOSPITAL. |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XA74 | THIS PLACE OF SERVICE CODE IS NOT ELIGIBLE FOR PRIMARY CARE PHYSICIAN CLASSIFICATION. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| XA75 | PLACE OF SERVICE CODE IS NOT ELIGIBLE FOR MID LEVEL PROVIDER CLASSIFICATION. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| XA76 | BILL TYPE 14X IS ONLY VALID FOR LAB TEST |
MA30
Missing/incomplete/invalid type of bill. |
CO | 16 | View → |
| XA85 | LINE BUNDELED INTO ENCOUNTER RATE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA86 | MUST BILL WITH ENCOUNTER CODE T1015 OR S5190 |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA87 | FAMILY PLANNING DEVICES AND SERVICES MUST BE SUBMITTED ON A SEPARATE CLAIM. CANNOT COMBINE WITH OTH… |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XA91 | INCORRECT MODIFIER USED FOR BEHAVORIAL HEALTH SERVICE |
N519
Invalid combination of HCPCS modifiers. |
CO | 16 | View → |
| XA93 | CPT CODE IS NOT REIMBURSABLE IN THIS PLACE OF SERVICE. |
M77
Missing/incomplete/invalid/inappropriate place of serv… |
CO | 16 | View → |
| XA96 | THE CLAIM WAS BILLED WITH AN OPERATING ROOM REVENUE CODE AND WITHOUT A ICD-10-PCS PROCEDURE CODE. |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| XA98 | VALUE CODE IS REQUIRED FOR PATIENTS BELOW AGE MINIMUM. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XA99 | OCCURRENCE CODE IS REQUIRED FOR LTC CLAIM WITH TOB/TAXONOMY COMBINATION . |
M45
Missing/incomplete/invalid occurrence code(s). |
CO | 16 | View → |
| XB01 | VALUE CODE 23 IS REQUIRED ON LTC CLAIMS. |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XB02 | PROCEDURE NOT VALID FOR SERIES BILL. |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| XB03 | CLAIMS SUBMITTED FOR LTC SERVICES MUST BE FOR A SINGLE MONTH OF SERVICE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB04 | PROCEDURE CODE IS DATED OUTSIDE OF STATEMENT DATES . |
N301
Missing/incomplete/invalid procedure date(s). |
CO | 16 | View → |
| XB05 | MEDICATION ASSISTED TREATMENT (MAT) CODE IS REIMBURSED WITH MAXIMUM OF ONE UNIT PER EVERY SEVEN (7)… |
M139
Denied services exceed the coverage limit for the demo… |
CO | 119 | View → |
| XB06 | HFS STATE T1015 AND S5190 CANNOT BE BILLED ON THE SAME CLAIM |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB07 | EFFECTIVE 1/1/2018, HFS REQUIRES LEGAL ABORTION SERVICES TO BE BILLED WITH A MODIFIER INDICATING TH… |
N519
Invalid combination of HCPCS modifiers. |
CO | 4 | View → |
| XB08 | INTERIM CLAIMS ARE NOT ALLOWED FOR HOSPITAL STAYS SUBJECT TO DRG PAYMENT METHODOLOGY. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB26 | DIAGNOSIS: THE DIAGNOSIS IS NOT TYPICAL FOR PATIENTS AGE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB27 | PROCEDURE: THE PROCEDURE IS NOT TYPICAL FOR PATIENTS AGE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB28 | BILLING TAXONOMY IS BLANK OR INVALID |
N255
Missing/incomplete/invalid billing provider taxonomy. |
CO | 16 | View → |
| XB40 | INTERIM CLAIM MUST BE AT LEAST 30 DAYS OLD |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| XB41 | INTERIM CLAIMS ARE NOT ALLOWED FOR HOSPITAL STAYS SUBJECT TO DRG PAYMENT METHODOLOGY |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 96 | View → |
| 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 → |
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.