US Medical Term · billing
Remark Code
Código de Observación
In 9 languages
| Language | Term |
|---|---|
| English | Remark Code |
| Spanish (Español) | Código de Observación |
| Chinese (中文) | 备注代码 |
| Korean (한국어) | 비고 코드 |
| Vietnamese (Tiếng Việt) | Mã Ghi chú |
| Filipino (Tagalog) | Remark Code |
| Portuguese (Português) | Código de Observação |
| Thai (ภาษาไทย) | รหัสหมายเหตุ |
| Japanese (日本語) | 備考コード |
What it means
A remark code is an alphanumeric code that appears on an Explanation of Benefits or remittance advice to provide additional information about how a claim was processed. Unlike denial codes, remark codes do not always mean a claim was rejected—they may explain payment adjustments, indicate a service was covered at a different rate, or clarify coordination of benefits decisions. Remark codes are standardized by CMS and begin with prefixes such as M, N, or MA. If you see an unfamiliar remark code on your EOB, look up its meaning on the CMS Remittance Advice Remark Code list or call your insurer.
How to say it
Sentences a patient might use with a doctor, nurse, pharmacist, or insurer:
rih-MARK kohd
código de observación
Also called 'remittance remark code' or 'RARC'
También llamado 'código de observación de remesa' o 'RARC'
Your EOB might show: 'CO-97, N522' with written explanations below
'Su EOB puede mostrar: CO-97, N522 con explicaciones escritas'
Where you'll see it
Related terms
Sources
Last reviewed: September 2026