Denial · CARC 18
DUPLICATE · NORTHSTAR MUTUAL
Classification
| Field | Value |
|---|---|
| Primary CARC | 18 |
| All CARCs | 18 |
| Root cause | DUPLICATE |
| Owns the fix | Billing Related |
| Appealable | yes |
| Recoverable | no |
| Recommended action | Exact duplicate. Confirm it is a duplicate rather than a distinct service on the same day. |
| Payer | NORTHSTAR MUTUAL |
| Denial date | 13 Apr 2025 |
| Appeal deadline | 10 Oct 2025 |
Denial workflow
| Field | Value |
|---|---|
| Current status | new |
| Appeal outcome | not recorded |
| Closure reason | not applicable |
What this denial means, and to whom
The modelled appeal window passed 347 days ago
The 835 reports CARC 18 on 13 Apr 2025, withholding $431.00 from the provider. Modelled recoverable $0.00, less an estimated rework cost of $31.00, leaves $0.00 net. The configured appeal window for this payer ends 10 Oct 2025, 347 days ago. Recommended action: Exact duplicate. Confirm it is a duplicate rather than a distinct service on the same day. Confirm the contractual deadline and any exception, reconsideration or correction route with the payer before closing the case.
From: Denial derivation: root cause, appealability, the recoverable amount net of an estimated rework cost, and a filing deadline derived from the denial date.
Limits: The deadline and the recoverable amount are application estimates. The deadline is the denial date plus a configured per-payer window, not a term read from the payer's contract or an appeal notice, and the recoverable figure is a model rather than a promise of payment. Confirm both against the policy before relying on them.
Adjustments
| Level | Code | Amount | Counts as |
|---|---|---|---|
| line | OA/18 | 431.00 | withheld |