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

# Implementation guides

> Combine code prediction with agents and client-side content to build coding workflows

Corti code prediction models convert unstructured clinical text into structured medical codes. On their own, they return predictions — `codes` the model is confident should be billed, `candidates` worth human review, `evidences` pointing back to the source text, and `alternatives` the model considered.

Building a production coding workflow means combining those predictions with your own context: payer contracts, billing requirements, EHR data, and reviewer tooling. Corti agents can further enrich the pipeline by querying external knowledge or running multi-step reasoning over the note before or after coding.

These guides walk through the core implementation patterns, from foundational encounter coding to CDI review and revenue cycle automation.

***

## What's covered

<Card title="Encounter Diagnosis Coding" icon="hospital" href="/coding/encounter-coding" horizontal>
  Assign accurate diagnosis and procedure codes to clinical encounters — the foundation workflow.
</Card>

<Card title="Clinical Documentation Integrity (CDI)" icon="clipboard-list" href="/coding/cdi" horizontal>
  Accelerate concurrent and retrospective CDI review by surfacing code suggestions and documentation gaps.
</Card>

<Card title="Revenue Cycle" icon="dollar-sign" href="/coding/revenue-cycle" horizontal>
  Surface missed codes and revenue leakage at scale with HCC capture sweeps and retrospective audits.
</Card>

***

## Where to start

New to the Medical Coding API? Start with [Encounter Diagnosis Coding](/coding/encounter-coding) — it covers the foundational request patterns, review workflows, and success metrics that the other guides build on.

### Common coding system combinations

* **US inpatient admission:** `icd10cm-inpatient` + `icd10pcs`
* **US outpatient / ED / office visit:** `icd10cm-outpatient` + `cpt`
* **UK inpatient admission:** `icd10uk-inpatient` + `opcs4`
* **UK outpatient:** `icd10uk-outpatient`
* **German inpatient admission:** `icd10gm-inpatient` + `ops`
* **German outpatient:** `icd10gm-outpatient`
* **French inpatient admission (PMSI):** `cim10fr-inpatient` + `ccam`
* **French outpatient / ambulatory:** `cim10fr-outpatient` + `ccam`
* **International inpatient:** `icd10int-inpatient` (or a national extension such as `icd10gm-inpatient`)

<br />

<Note>Please [contact us](mailto:help@corti.ai) if you need help choosing the right workflow or have questions about implementation.</Note>