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Table 1 Head categories listed in the ICD-11 extension codes chapter and selected examples in hierarchical order (09/30/2021)

From: ICD-11 extension codes support detailed clinical abstraction and comprehensive classification

Head categories: all parents in ICD-11 chapter X

Type of Extension codes

Examples in hierachical order

Subheading (Parent)

Subheading (Parent)

Subheading (Parent)

Most detailed category

Severity Scale Value

1

Disease Specific Severity Scale Value

Tumour spread staging scale value

 

XS4P Stage II

Temporality

1

Duration of pregnancy

  

XT4J Duration of pregnancy 26–33 completed weeks

Aetiology

1

Infectious Agents

Virus

XN83D Coronavirus 

XN109 SARS-CoV-2

XN8V6 SARS-CoV-2 Delta

Topology Scale Value

1

Laterality

  

XK9K Right

Anatomy and topography

1

Functional anatomy

Digestive system

XA0KT3 Biliary tract

XA8KL9 Gallbladder

Histopathology

1

Adenomas and adenocarcinomas

Adenomas and adenocarcinomas, malignant

 

XH74S1 Adenocarcinoma, NOS

Dimensions of injury

1

Whether fracture is open or closed

  

XJ44E Closed fracture

Dimensions of external causes

1

Aspects of transport injury events

Mode of transport of person injured in transport event

XE7NK Motorcycle as mode of transport of person injured in transport related event

XE2J1 Moped as mode of transport of person injured in transport related event

Consciousness

1

Pupil reaction score

  

XC5Y Neither pupil reacts

Substances

1

Medicaments

Analgesics, antipyretics and anti-inflammatory drugs

Acetylsalicylic acid and other salicylates

XM4G06 Acetylicsalicylic acid

Diagnosis code descriptors#

2

Diagnosis certainty

  

XY7Z Provisional diagnosis

Capacity or context*

2

   

XX2QG9 Condition of the fetus and newborn reported in the context of the mother

Health devices, equipment and supplies

1

Respiratory and anaesthesia devices

XD5GF6 Respiratory masks and balloons, single-use and reusable

XD3W67 Air/oxygen masks and nasal cannulas

XD0VQ3 Air/oxygen masks

  1. #For details see Table 2
  2. *This parent has only one detailed category