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Chapters ENES DE

XExtension Codes
Anatomy and topography
Surface topography
XA6AS2Extremities
XA45A6Lower extremity
XA8KL5Knee

XA9L17 category

Patellar region

Also indexed as

Patellar region

Nearby in Knee

XA77E9Lateral surface of knee
XA9S09Medial surface of knee
XA4DM3Popliteal fossa

NextXA77E9 — Lateral surface of knee

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
XA4BA8Upper extremity
XA45A6Lower extremity
XA3VA7Buttock
XA5S78Thigh
XA8KL5Knee
XA3YG1Lower leg
XA67V4Ankle
XA47V8Foot
XA9L17Patellar region
XA77E9Lateral surface of knee
XA9S09Medial surface of knee
XA4DM3Popliteal fossa

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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