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

# Supported Coding Systems

> Feature availability per coding system and recommended pairings.

Medera coding systems and their feature availability.

## Feature matrix

| System             | Realm         |                 BH calibrated                 | Specificity expansion |     PA detection    | Span anchors | Status |
| :----------------- | :------------ | :-------------------------------------------: | :-------------------: | :-----------------: | :----------: | :----- |
| **ICD-10-CM**      | US            |                  ✓ (F-codes)                  |           ✓           |          ✓          |       ✓      | GA     |
| **ICD-10-PCS**     | US inpatient  |                      beta                     |           ✓           |          —          |       ✓      | beta   |
| **ICD-10 (WHO)**   | International |                  ✓ (F-codes)                  |           ✓           |          —          |       ✓      | GA     |
| **CPT**            | US outpatient |            ✓ (psychotherapy + E/M)            |     ✓ (E\&M level)    |          ✓          |       ✓      | GA     |
| **HCPCS Level II** | US            |         ✓ (BH-specific H- and S-codes)        |           —           |          ✓          |       ✓      | GA     |
| **SNOMED CT**      | International |                ✓ (BH concepts)                |           ✓           |          —          |       ✓      | GA     |
| **LOINC**          | International | ✓ (PHQ-9, GAD-7, AUDIT-C, C-SSRS instruments) |           —           |          —          |       ✓      | GA     |
| **RxNorm**         | US            |          ✓ (psychotropics + general)          |           —           | ✓ (formulary check) |       ✓      | GA     |

## Recommended pairings

| Encounter type                  | Code systems                                                     |
| :------------------------------ | :--------------------------------------------------------------- |
| **BH outpatient (psychiatry)**  | ICD-10-CM (F-codes) + CPT (E/M + 90791 / 90792 + 9083x) + RxNorm |
| **BH telehealth**               | ICD-10-CM + CPT (with modifier 95) + RxNorm                      |
| **CoCM (Collaborative Care)**   | ICD-10-CM + CPT (99491–99494, G2214)                             |
| **Psychotherapy (LCSW/LMFT)**   | ICD-10-CM + CPT (9083x)                                          |
| **Crisis intervention**         | ICD-10-CM + CPT (90839/90840) or HCPCS H2011                     |
| **Lab order (BH)**              | LOINC + ICD-10-CM                                                |
| **Prescription (psychotropic)** | RxNorm + ICD-10-CM                                               |

## Sequencing

For systems where order affects reimbursement — ICD-10-CM and ICD-10-PCS — Medera returns codes in clinical-significance order. The principal diagnosis or principal procedure appears first, followed by secondary diagnoses and additional procedures.

<Note>
  Sequencing is currently in alpha for ICD-10-CM and ICD-10-PCS. See the [Core Concepts](/coding/introduction) page for the sequencing semantics.
</Note>

***

## What's next

<CardGroup cols={2}>
  <Card title="Quickstart" icon="https://mintcdn.com/medera-357fd587/n1mgcc3nR2sq_PoL/icons/ui/zap.svg?fit=max&auto=format&n=n1mgcc3nR2sq_PoL&q=85&s=279c57d41af922abbba25c4afddfc3fe" href="/coding/quickstart" width="40" height="40" data-path="icons/ui/zap.svg">Suggest codes for your first note.</Card>
  <Card title="Encounter Coding" icon="https://mintcdn.com/medera-357fd587/iC-6rAuwl-0aQSw_/icons/ui/clipboard-check.svg?fit=max&auto=format&n=iC-6rAuwl-0aQSw_&q=85&s=9cf869d685b45a2ec31be2b3d675a841" href="/coding/encounter-coding" width="40" height="40" data-path="icons/ui/clipboard-check.svg">Per-encounter use cases.</Card>
  <Card title="CDI" icon="https://mintcdn.com/medera-357fd587/iC-6rAuwl-0aQSw_/icons/ui/file-pen.svg?fit=max&auto=format&n=iC-6rAuwl-0aQSw_&q=85&s=7a092163a19603cf99af65ed0de4639b" href="/coding/cdi" width="40" height="40" data-path="icons/ui/file-pen.svg">Documentation gaps as queries.</Card>
  <Card title="Revenue Cycle" icon="https://mintcdn.com/medera-357fd587/iC-6rAuwl-0aQSw_/icons/ui/chart-line.svg?fit=max&auto=format&n=iC-6rAuwl-0aQSw_&q=85&s=c4831c9d7d3dd913eed06ca94e3b99bd" href="/coding/revenue-cycle" width="40" height="40" data-path="icons/ui/chart-line.svg">Sweeps + audits.</Card>
</CardGroup>