---
title: "asa_status"
description: "Classification system adopted by the American Society of Anesthesiologists (ASA) as part of a pre-surgical risk assessment."
---

Classification system adopted by the American Society of Anesthesiologists (ASA) as part of a pre-surgical risk assessment.

**Purpose.** To record the classification system adopted by the American Society of Anesthesiologists (ASA) as part of a pre-surgical risk assessment.

## Source

| Model | Leg | Role |
|---|---|---|
| `openEHR-EHR-OBSERVATION.asa_status.v1` | openEHR | defines this table |

## Columns

| Column | Type | Null | Description | Source |
|---|---|---|---|---|
| `id` | `uuid primary key` | no | Primary key. | — |
| `form_id` | `uuid` → [`form`](/docs/tables/form) | no | The form this entry was recorded on. | — |
| `form_block_id` | `uuid` | yes | The block within the form, when the entry is bound to one. | — |
| `classification`<br />`classification_code`<br />`classification_system`<br />`classification_numeric`<br />`classification_valueset_id` | coded text<br />`text`, `text`, `text`, `numeric`, `text` | yes | Classification | `/data[at0015]/events[at0016]/data[at0017]/items[at0001]` |
| `emergency_e` | `boolean` | yes | Emergency (E) | `/data[at0015]/events[at0016]/data[at0017]/items[at0020]` |

## Constraints

```sql
check ((classification_code is null and classification_system is null and classification_numeric is null and classification is null) or (classification_valueset_id is not null and classification_code is not null and classification_system is not null and classification_numeric is not null and classification is not null))
```

## Unique

- `form_block_id`

## References

| Columns | Target | On delete |
|---|---|---|
| `form_id` | [`form`](/docs/tables/form) | cascade |
| `form_id, form_block_id` | [`form_block`](/docs/tables/form_block) | cascade |
| `classification_valueset_id, classification_code, classification_system, classification, classification_numeric` | [`valueset_code`](/docs/tables/valueset_code) | restrict |

## Indexes

- `asa_status_form_id_idx` on `form_id`

## Value sets

| Value set | Codes |
|---|---|
| `org.openehr::openEHR-EHR-OBSERVATION.asa_status.v1/classification` | 6 |