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Chapters ENES DE

XExtension Codes
Anatomy and topography
Surface topography
XA3FR3Trunk
XA4QH7Upper trunk
XA12C1Breast
XA1NS5Upper half of breast

XA2Q54 category

Upper outer quadrant of breast

Also indexed as

Upper outer quadrant of breast

Nearby in Upper half of breast

XA3LS6Upper inner quadrant of breast
XA3PG5Axillary tail of breast

PreviousXA3LS6 — Upper inner quadrant of breast NextXA3PG5 — Axillary tail of breast

Browse ICD-11

01Certain infectious or parasitic diseases
02Neoplasms
03Diseases of the blood or blood-forming organs
04Diseases of the immune system
05Endocrine, nutritional or metabolic diseases
06Mental, behavioural or neurodevelopmental disorders
07Sleep-wake disorders
08Diseases of the nervous system
09Diseases of the visual system
10Diseases of the ear or mastoid process
11Diseases of the circulatory system
12Diseases of the respiratory system
13Diseases of the digestive system
14Diseases of the skin
15Diseases of the musculoskeletal system or connective tissue
16Diseases of the genitourinary system
17Conditions related to sexual health
18Pregnancy, childbirth or the puerperium
19Certain conditions originating in the perinatal period
20Developmental anomalies
21Symptoms, signs or clinical findings, not elsewhere classified
22Injury, poisoning or certain other consequences of external causes
23External causes of morbidity or mortality
24Factors influencing health status or contact with health services
25Codes for special purposes
26Supplementary Chapter Traditional Medicine Conditions
VSupplementary section for functioning assessment
XExtension Codes
Severity Scale Value
Temporality
Aetiology
Topology Scale Value
Anatomy and topography
Histopathology
Dimensions of injury
Dimensions of external causes
Consciousness
5 more
Functional anatomy
Surface topography
Partonomic view
XA1RS6Head and neck
XA3FR3Trunk
XA6AS2Extremities
XA4QH7Upper trunk
XA6CY1Lower trunk
XA2P90Back
XA8HA7Anogenital region
XA5D93Thorax
XA12C1Breast
XA1NS5Upper half of breast
XA0US1Central portion of breast
XA3UY3Lower half of breast
XA9CM2Lateral half of breast
XA3JH6Medial half of breast
XA0T50Inframammary flexure
XA3LS6Upper inner quadrant of breast
XA2Q54Upper outer quadrant of breast
XA3PG5Axillary tail of breast

International Classification of Diseases, Eleventh Revision (ICD-11), World Health Organization (WHO) 2019/2021, https://icd.who.int/browse11. Licensed under Creative Commons Attribution-NoDerivatives 3.0 IGO (CC BY-ND 3.0 IGO).

Release 2026-01. View this entity in the official WHO ICD-11 browser.

This page reproduces WHO classification content for reference. It is not medical advice and must not be used to diagnose or treat. For coding decisions, consult the official release and your national coding guidelines.

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