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11Diseases of the circulatory system
Diseases of arteries or arterioles
BD50Aortic aneurysm or dissection

BD50.3 category

Thoracic aortic aneurysm

3 subordinate codes

BD50.30Thoracic aortic aneurysm with perforation
BD50.31Thoracic aortic aneurysm with rupture
4B4ZDiseases of the immune system, unspecified

Nearby in Aortic aneurysm or dissection

BD50.0Thoracic aortic dissection, ascending aorta dissection and propagation beyond arch
BD50.1Ascending aorta dissection not beyond arch
BD50.2Descending aorta dissection and distal propagation
BD50.4Abdominal aortic aneurysm
BD50.5Thoracoabdominal aortic aneurysm
4B4ZDiseases of the immune system, unspecified

PreviousBD50.2 — Descending aorta dissection and distal propagation NextBD50.4 — Abdominal aortic aneurysm

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
BC20Chronic rheumatic heart diseases, not elsewhere classified
BC40-BC4ZDiseases of the myocardium or cardiac chambers
BC60-BC9ZCardiac arrhythmia
BD10-BD1ZHeart failure
BD30-BD5ZDiseases of arteries or arterioles
BD70-BD7ZDiseases of veins
BD90-BD9ZDisorders of lymphatic vessels or lymph nodes
BE10-BE1F.1Postprocedural disorders of circulatory system
BE20Embolism, so stated
14 more
BD30Acute arterial occlusion
BD40-BD4ZChronic arterial occlusive disease
BD50Aortic aneurysm or dissection
BD51Arterial aneurysm or dissection, excluding aorta
BD52Certain specified disorders of arteries or arterioles
BD53Secondary disorders of arteries or arterioles
BD54Diabetic foot ulcer
BD55Asymptomatic stenosis of intracranial or extracranial artery
BD56Asymptomatic occlusion of intracranial or extracranial artery
2 more
BD50.0Thoracic aortic dissection, ascending aorta dissection and propagation beyond arch
BD50.1Ascending aorta dissection not beyond arch
BD50.2Descending aorta dissection and distal propagation
BD50.3Thoracic aortic aneurysm
BD50.4Abdominal aortic aneurysm
BD50.5Thoracoabdominal aortic aneurysm
4B4ZDiseases of the immune system, unspecified
BD50.30Thoracic aortic aneurysm with perforation
BD50.31Thoracic aortic aneurysm with rupture
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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