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 | |
|---|---|---|---|---|---|
| 154 | PAYER DEEMS THE INFORMATION SUBMITTED DOES NOT SUPPORT THIS DAY'S SUPPLY. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 154 | View → |
| 155 | PATIENT REFUSED THE SERVICE/PROCEDURE. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 155 | View → |
| 157 | SERVICE/PROCEDURE WAS PROVIDED AS A RESULT OF AN ACT OF WAR. | — | CO | 157 | View → |
| 158 | SERVICE/PROCEDURE WAS PROVIDED OUTSIDE OF THE UNITED STATES. | — | CO | 158 | View → |
| 159 | SERVICE/PROCEDURE WAS PROVIDED AS A RESULT OF TERRORISM. | — | CO | 159 | View → |
| 160 | INJURY/ILLNESS WAS THE RESULT OF AN ACTIVITY THAT IS A BENEFIT EXCLUSION. |
N174
This is not a covered service/procedure/ equipment/bed… |
OA | 160 | View → |
| 162 | STATE-MANDATED REQUIREMENT FOR PROPERTY AND CASUALTY, SEE CLAIM PAYMENT REMARKS CODE FOR SPECIFIC E… | — | CO | P7 | View → |
| 163 | ATTACHMENT REFERENCED ON THE CLAIM WAS NOT RECEIVED. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 163 | View → |
| 164 | ATTACHMENT REFERENCED ON THE CLAIM WAS NOT RECEIVED IN A TIMELY FASHION. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 164 | View → |
| 165 | REFERRAL ABSENT OR EXCEEDED. |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 165 | View → |
| 166 | THESE SERVICES WERE SUBMITTED AFTER THIS PAYERS RESPONSIBILITY FOR PROCESSING CLAIMS UNDER THIS PLA… |
N30
Patient ineligible for this service. |
OA | 166 | View → |
| 167 | THIS (THESE) DIAGNOSIS(ES) IS (ARE) NOT COVERED. |
M64
Missing/incomplete/invalid other diagnosis. |
CO | 167 | View → |
| 168 | SERVICE(S) HAVE BEEN CONSIDERED UNDER THE PATIENT'S MEDICAL PLAN. BENEFITS ARE NOT AVAILABLE UNDER … |
N174
This is not a covered service/procedure/ equipment/bed… |
OA | 168 | View → |
| 169 | ALTERNATE BENEFIT HAS BEEN PROVIDED. | — | OA | 169 | View → |
| 170 | PAYMENT IS DENIED WHEN PERFORMED/BILLED BY THIS TYPE OF PROVIDER. |
N95
This provider type/provider specialty may not bill thi… |
CO | 170 | View → |
| 171 | PAYMENT IS DENIED WHEN PERFORMED/BILLED BY THIS TYPE OF PROVIDER IN THIS TYPE OF FACILITY. |
N95
This provider type/provider specialty may not bill thi… |
CO | 171 | View → |
| 172 | PAYMENT IS ADJUSTED WHEN PERFORMED/BILLED BY A PROVIDER OF THIS SPECIALTY | — | CO | 172 | View → |
| 173 | SERVICE WAS NOT PRESCRIBED BY A PHYSICIAN. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 173 | View → |
| 174 | SERVICE WAS NOT PRESCRIBED PRIOR TO DELIVERY. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 174 | View → |
| 175 | PRESCRIPTION IS INCOMPLETE. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 175 | View → |
| 176 | PRESCRIPTION IS NOT CURRENT. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 176 | View → |
| 177 | PATIENT HAS NOT MET THE REQUIRED ELIGIBILITY REQUIREMENTS. |
N30
Patient ineligible for this service. |
CO | 177 | View → |
| 178 | PATIENT HAS NOT MET THE REQUIRED SPEND DOWN REQUIREMENTS. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 178 | View → |
| 179 | PATIENT HAS NOT MET THE REQUIRED WAITING REQUIREMENTS. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 179 | View → |
| 180 | PATIENT HAS NOT MET THE REQUIRED RESIDENCY REQUIREMENTS. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 180 | View → |
| 180D | APPEAL DENIED. APPEAL RECEIVED MORE THAN 180 DAYS FROM DATE OF PAYMENT OR DENIAL. | — | CO | 138 | View → |
| 181 | PROCEDURE CODE WAS INVALID ON THE DATE OF SERVICE. IN ORDER FOR THIS CLAIM TO BE RECONSIDERED ALL … |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 181 | View → |
| 183 | THE REFERRING PROVIDER IS NOT ELIGIBLE TO REFER THE SERVICE BILLED. |
N95
This provider type/provider specialty may not bill thi… |
CO | 183 | View → |
| 184 | THE PRESCRIBING/ORDERING PROVIDER IS NOT ELIGIBLE TO PRESCRIBE/ORDER THE SERVICE BILLED. |
N95
This provider type/provider specialty may not bill thi… |
CO | 184 | View → |
| 185 | THE RENDERING PROVIDER IS NOT ELIGIBLE TO PERFORM THE SERVICE BILLED. |
N95
This provider type/provider specialty may not bill thi… |
CO | 185 | View → |
| 186 | LEVEL OF CARE CHANGE ADJUSTMENT. | — | CO | 186 | View → |
| 187 | HEALTH SAVINGS ACCOUNT PAYMENTS | — | OA | 187 | View → |
| 188 | THIS PRODUCT/PROCEDURE IS ONLY COVERED WHEN USED ACCORDING TO FDA RECOMMENDATIONS. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 188 | View → |
| 189 | NOT OTHERWISE CLASSIFIED' OR 'UNLISTED' PROCEDURE CODE (CPT/HCPCS) WAS BILLED WHEN THERE IS A SPECI… |
M51
Missing/incomplete/invalid procedure code(s). |
CO | 189 | View → |
| 190 | PAYMENT IS INCLUDED IN THE ALLOWANCE FOR A SKILLED NURSING FACILITY (SNF) QUALIFIED STAY. |
N19
Procedure code incidental to primary procedure. |
CO | 190 | View → |
| 191 | NOT A WORK RELATED INJURY/ILLNESS AND THUS NOT THE LIABILITY OF THE WORKERS' COMPENSATION CARRIER. |
N418
Misrouted claim. See the payer's claim submission ins… |
OA | 19 | View → |
| 193 | ORIGINAL PAYMENT DECISION IS BEING MAINTAINED. UPON REVIEW, IT WAS DETERMINED THAT THIS CLAIM WAS P… |
MA46
Alert: The new information was considered but addition… |
CO | 193 | View → |
| 194 | ANESTHESIA PERFORMED BY THE OPERATING PHYSICIAN, THE ASSISTANT SURGEON OR THE ATTENDING PHYSICIAN. | — | CO | 194 | View → |
| 197 | PRECERTIFICATION/AUTHORIZATION/NOTIFICATION ABSENT. |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 197 | View → |
| 198 | PRECERTIFICATION/AUTHORIZATION EXCEEDED. |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 197 | View → |
| 199 | REVENUE CODE AND PROCEDURE CODE DO NOT MATCH. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 199 | View → |
| 200 | EXPENSES INCURRED DURING LAPSE IN COVERAGE |
N30
Patient ineligible for this service. |
OA | 200 | View → |
| 200D | DME SERVICE EXCEEDS QUANTITY LIMITS. SVC LIMITED TO 200 EVERY 30 DAYS. |
N362
The number of Days or Units of Service exceeds our acc… |
CO | 222 | View → |
| 200U | SERVICES EXCEEDING 200 UNITS PER MEMBER/PER PROVIDER REQUIRE AUTHORIZATION |
M62
Missing/incomplete/invalid treatment authorization cod… |
CO | 197 | View → |
| 202 | NON-COVERED PERSONAL COMFORT OR CONVENIENCE SERVICES. |
N174
This is not a covered service/procedure/ equipment/bed… |
OA | 202 | View → |
| 203 | DISCONTINUED OR REDUCED SERVICE. |
N174
This is not a covered service/procedure/ equipment/bed… |
CO | 203 | View → |
| 204 | THIS SERVICE/EQUIPMENT/DRUG IS NOT COVERED UNDER THE PATIENTâS CURRENT BENEFIT PLAN |
N174
This is not a covered service/procedure/ equipment/bed… |
OA | 204 | View → |
| 206 | NATIONAL PROVIDER IDENTIFIER - MISSING. |
N95
This provider type/provider specialty may not bill thi… |
CO | 206 | View → |
| 207 | NATIONAL PROVIDER IDENTIFIER - INVALID FORMAT |
N95
This provider type/provider specialty may not bill thi… |
CO | 207 | View → |
| 208 | NATIONAL PROVIDER IDENTIFIER - NOT MATCHED. |
N95
This provider type/provider specialty may not bill thi… |
CO | 208 | 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.