> ## Documentation Index
> Fetch the complete documentation index at: https://agents.nanonets.com/docs/llms.txt
> Use this file to discover all available pages before exploring further.

# Coding Charge Reviewer

> `coding_charge_reviewer` independently reviews a coding agent's proposed CPT/ICD/modifier output against the clinical documentation and flags errors.

`coding_charge_reviewer` independently reviews a coding agent's proposed CPT/ICD/modifier output against the clinical documentation and flags errors. It is part of the **Nanonets Coding Engine** tool group.

The strict reviewer system prompt is baked into the tool.

## Inputs

* `documentation` (required): the clinical documentation the codes were derived from.
* `proposed_codes` (required): the generated charges and coding suggestions from the CPT step to review.
* `diagnosis_output` (optional): the diagnosis-step ICD-10 output, for extra context.

## Output

```json theme={null}
{
  "tool_name": "coding_charge_reviewer",
  "agreed": true,
  "issues": [{ "severity": "warning|error", "code_in_question": "", "problem": "", "suggested_fix": "" }],
  "completed_at": "2026-06-01T00:00:00Z"
}
```

`agreed=true` only when the reviewer would sign off on submitting the claim.

## Human-readable text

In the task feed the tool renders a `## Coding Charge Reviewer` table (agreed, issue count) and an `## Issues` table (severity, code, problem, suggested fix). The full result struct stays in `structuredContent`.

## Agent Instruction Guidance

Merge `issues` into the final `validation_issues` array with source `verifier`.

## Notes

* LLM tool. Billed per call. `default_enabled` is false.