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Chapters ENES DE

XExtension Codes
Anatomy and topography
Functional anatomy
Musculoskeletal system
Joints and ligaments
XA5ST4Joints and ligaments of the lower extremity
XA7L41Joints of lower extremity

XA8RL1 category

Knee joint

4 subordinate codes

XA0LC4Tibiofemoral joint
XA0VJ4Patellofemoral joint
XA0LG3Proximal tibiofibular joint
XA8VV2Semilunar cartilage

Also indexed as

Knee jointKnee joint, NOS

Nearby in Joints of lower extremity

XA4XS4Hip joint
XA27P3Ankle joint
XA22T0Joint of the foot

PreviousXA4XS4 — Hip joint NextXA27P3 — Ankle joint

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
Nervous system
Visual system
Auditory system
Circulatory system
Respiratory system
Digestive system
Integumentary system
Musculoskeletal system
Genitourinary system
3 more
Bones
Joints and ligaments
Cartilage
Muscles
Tendons
XA16K5Bursa
XA7948Joints and ligaments of the head and neck
XA2EL4Joints and ligaments of the thorax
XA6KC7Joints and ligaments of the pelvis and perineum
XA4XC0Joints and ligaments of the upper extremity
XA5ST4Joints and ligaments of the lower extremity
XA2P74Ligaments and joints of multiple sites
Number of joints
Number of Ligaments
XA7L41Joints of lower extremity
XA7U26Ligaments of the lower extremity
XA4XS4Hip joint
XA8RL1Knee joint
XA27P3Ankle joint
XA22T0Joint of the foot
XA0LC4Tibiofemoral joint
XA0VJ4Patellofemoral joint
XA0LG3Proximal tibiofibular joint
XA8VV2Semilunar cartilage

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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