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Chapters ENES DE

24Factors influencing health status or contact with health services
Reasons for contact with the health services
Presence of device, implants or grafts
QB50Presence of cardiac or vascular implants or grafts

QB50.2 category

Presence of prosthetic heart valve

4 subordinate codes

QB50.21Presence of mechanical heart valve
QB50.24Presence of bioprosthetic heart valve
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

Nearby in Presence of cardiac or vascular implants or grafts

QB50.0Presence of electronic cardiac devices
QB50.1Presence of coronary artery bypass graft
QB50.4Presence of coronary angioplasty implant or graft
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

PreviousQB50.1 — Presence of coronary artery bypass graft NextQB50.4 — Presence of coronary angioplasty implant or graft

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
QA00-QD3ZReasons for contact with the health services
QD50-QF2ZFactors influencing health status
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
QB10-QB1ZFactors related to medical facilities or other health care
QB20-QB2ZDonors of organs or tissues
QB30-QB3ZFitting, adjustment or management of devices
QB40-QB4ZDependence on enabling machines or devices
QB50-QB5ZPresence of device, implants or grafts
QB60-QB6ZSurgical or postsurgical states
QB70-QB7ZConvalescence
QB80-QB8ZContact with health services for specific surgical interventions
QB90-QB9ZContact with health services for nonsurgical interventions not involving devices
11 more
QB50Presence of cardiac or vascular implants or grafts
QB51Presence of devices other than cardiac or vascular implants
4B4ZDiseases of the immune system, unspecified
QB50.0Presence of electronic cardiac devices
QB50.1Presence of coronary artery bypass graft
QB50.2Presence of prosthetic heart valve
QB50.4Presence of coronary angioplasty implant or graft
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified
QB50.21Presence of mechanical heart valve
QB50.24Presence of bioprosthetic heart valve
4B4YOther specified diseases of the immune system
4B4ZDiseases of the immune system, unspecified

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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