American Society of Anesthesiologists (ASA) Physical Status Classification System

Metadata

Coding system
SNOMED CT (UK Clinical Edition)
Coding system release
40.4.0
Organisation
Oxford Health Protection Research Unit
Codelist ID
OxHPRU/asa
Version ID
7001462f
Number of codes included
17

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Versions

  1. 7001462f Published
    Created: 14 Aug 2025 at 07:39

About

Methodology

Context

Is this for a specific purpose or context, if so what, or could it be used more broadly?

Inclusion/exclusion criteria

Describe the inclusion and exclusion criteria used to define the codelist.

Borderline cases

List any codes which were considered borderline, and explain why they were included/excluded.

Sensitivity vs specificity

Is the aim of this codelist to be specific (e.g. hypertension via confirmed diagnosis codes), or sensitive (e.g. flu via potential symptom codes)?

Additional information

Any other relevant information about the codelist.

Codelists are developed by a broad community of users for individual study purposes, which may or may not meet the needs of other studies. They should not be thought of as universal definitions of a particular condition.

We don't offer any guarantees about what they do or don't identify. Users should carefully check that any codelist meets their needs, and seek clinical input where appropriate.

code term
1090811000000107 Assessment using American Society of Anesthesiologists Physical Status Classification System
273270000 American Society of Anesthesiologists physical status classification
302132005 American Society of Anesthesiologists physical status class
302133000 American Society of Anesthesiologists' grade I
302134006 American Society of Anesthesiologists' grade II
302135007 American Society of Anesthesiologists' grade III
302136008 American Society of Anesthesiologists' grade IV
302137004 American Society of Anesthesiologists' grade V
365422009 Finding of American Society of Anesthesiologists' gradings
413347006 Finding of American Society of Anesthesiologists physical status classification
413495001 American Society of Anesthesiologists physical status class 1
413496000 American Society of Anesthesiologists physical status class 2
413497009 American Society of Anesthesiologists physical status class 3
413498004 American Society of Anesthesiologists physical status class 4
413499007 American Society of Anesthesiologists physical status class 5
413500003 American Society of Anesthesiologists physical status class 6
774088000 Assessment using American Society of Anesthesiologists Physical Status Classification System

This page shows the search terms that were used to build the codelist. Concepts that match the search terms, but which were excluded, are in faint grey.

ASA physical status

Included 6 out of 6 matching concepts.

Show matching concepts
  • American Society of Anesthesiologists physical status class 1 (413495001)
  • American Society of Anesthesiologists physical status class 2 (413496000)
  • American Society of Anesthesiologists physical status class 3 (413497009)
  • American Society of Anesthesiologists physical status class 4 (413498004)
  • American Society of Anesthesiologists physical status class 5 (413499007)
  • American Society of Anesthesiologists physical status class 6 (413500003)

American Society of Anesthesiologists

Included 17 out of 18 matching concepts.

Show matching concepts
  • American Society of Anesthesiologists physical status class (302132005)
  • American Society of Anesthesiologists physical status class 1 (413495001)
  • American Society of Anesthesiologists physical status class 2 (413496000)
  • American Society of Anesthesiologists physical status class 3 (413497009)
  • American Society of Anesthesiologists physical status class 4 (413498004)
  • American Society of Anesthesiologists physical status class 5 (413499007)
  • American Society of Anesthesiologists physical status class 6 (413500003)
  • American Society of Anesthesiologists physical status classification (273270000)
  • American Society of Anesthesiologists' grade I (302133000)
  • American Society of Anesthesiologists' grade II (302134006)
  • American Society of Anesthesiologists' grade III (302135007)
  • American Society of Anesthesiologists' grade IV (302136008)
  • American Society of Anesthesiologists' grade V (302137004)
  • Assessment using American Society of Anesthesiologists Physical Status Classification System (774088000)
  • Assessment using American Society of Anesthesiologists Physical Status Classification System (1090811000000107)
  • Finding of American Society of Anesthesiologists physical status classification (413347006)
  • Finding of American Society of Anesthesiologists' gradings (365422009)
  • Intraoperative or immediately postoperative death in an American Society of Anesthesiologists Class I patient (370900009)

physical status classification

Included 10 out of 10 matching concepts.

Show matching concepts
  • American Society of Anesthesiologists physical status class 1 (413495001)
  • American Society of Anesthesiologists physical status class 2 (413496000)
  • American Society of Anesthesiologists physical status class 3 (413497009)
  • American Society of Anesthesiologists physical status class 4 (413498004)
  • American Society of Anesthesiologists physical status class 5 (413499007)
  • American Society of Anesthesiologists physical status class 6 (413500003)
  • American Society of Anesthesiologists physical status classification (273270000)
  • Assessment using American Society of Anesthesiologists Physical Status Classification System (774088000)
  • Assessment using American Society of Anesthesiologists Physical Status Classification System (1090811000000107)
  • Finding of American Society of Anesthesiologists physical status classification (413347006)