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 | |
|---|---|---|---|---|---|
| XA38 | COVERAGE IS FOR 09-QUALIFIED MEDICARE BENEFICIARY (QMB) ONLY. | — | CO | 96 | View → |
| XA39 | LTC DIRECT BILLING GUIDELINES REQUIRES ADMIT DATE AND ADMIT HOUR BE PRESENT ON THE CLAIM. |
N46
Missing/incomplete/invalid admission hour. |
CO | 16 | View → |
| XA40 | PROCEDURE CODE 90899 IS ALL-INCLUSIVE AND ENCOMPASSES BOTH THE PROFESSIONAL AND FACILITY CHARGES FO… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| XA43 | AGE DIAGNOSIS RESTRICTION - INFANT (< 1 YEAR) |
N129
Not eligible due to the patient's age. |
CO | 7 | View → |
| XA44 | AGE DIAGNOSIS RESTRICTION - CHILD (< 19 YEARS) |
N129
Not eligible due to the patient's age. |
CO | 9 | View → |
| XA45 | AGE DIAGNOSIS RESTRICTION - ADOLESCENT (10 - 19 YEARS) |
N129
Not eligible due to the patient's age. |
CO | 9 | View → |
| XA46 | AGE DIAGNOSIS RESTRICTION - ADULT (20+ YEARS) |
N129
Not eligible due to the patient's age. |
CO | 9 | View → |
| XA49 | SMOKING CESSATION TREATMENT - FREQUENCY |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA50 | PSYCHOTHERAPY WITH MEDICAL EVALUATION AND MANAGEMENT IS NOT REIMBURSABLE FOR PROVIDER TYPE. |
N95
This provider type/provider specialty may not bill thi… |
CO | 8 | View → |
| XA51 | INTERACTIVE COMPLEXITY PROCEDURE CODE MAY NOT BE BILLED AS A STAND-ALONE CODE OR WITH INAPPROPRIATE… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 16 | View → |
| XA52 | BRIDGE APPOINTMENT MUST BE BILLED ON HCFA CLAIM |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA53 | BRIDGE APPOINTMENT IS LIMITED TO ONE UNIT PER HOSPITALIZATION. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA54 | PROCEDURE TERMINATED FOR NON-MEDICAL REASONS | — | CO | 96 | View → |
| XA56 | THE DIAGNOSIS AND MODIFIER COMBINATION ARE INAPPROPRIATE. |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA57 | THE TOTAL UNITS OF EPOGEN MUST BE REPORTED USING VALUE CODE 68 AND/OR DOES NOT MATCH TOTAL UNITS BI… |
M49
Missing/incomplete/invalid value code(s) or amount(s). |
CO | 16 | View → |
| XA60 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA61 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA62 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA63 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA64 | THIS REVENUE CODE IS NOT PAYABLE ON AN OUTPATIENT CLAIM |
M50
Missing/incomplete/invalid revenue code(s). |
CO | 282 | View → |
| XA65 | DME SERVICE IS NOT COVERED BY CMS AS A RENTAL OR A PURCHASE WHEN THE ITEM HAS PREVIOUSLY BEEN PAID … |
N130
Consult plan benefit documents/guidelines for informat… |
CO | 16 | View → |
| XA66 | NPWT PUMP DRESSING KITS (A6550) REIMBURSEMENT IS LIMITED TO 15 PER MONTH. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA67 | NPWT PUMP CANISTER SETS (A7000) REIMBURSEMENT IS LIMITED TO 10 PER MONTH. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| XA68 | PROFESSIONAL RADIOLOGY SERVICES BILLED BY A PROVIDER OTHER THAN AN ANESTHESIOLOGIST, CARDIOLOGIST, … |
N95
This provider type/provider specialty may not bill thi… |
CO | 96 | View → |
| XA69 | CHIROPRACTIC SERVICE IS LIMITED TO 26 VISITS PER RECIPIENT PER 12 MONTH PERIOD. |
N640
Exceeds number/frequency approved/allowed within time … |
CO | 151 | View → |
| 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 → |
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.