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XExtension Codes
Anatomy and topography
Functional anatomy
Circulatory system
XA4PM9Cardiovascular system

XA21T7 category

Blood Vessels

13 subordinate codes

XA6943Blood vessel of the finger
XA7SM4Blood vessel of the thumb
XA6Y60Blood vessels at wrist or hand level
XA08R7Blood vessel of the kidney
XA5K61Blood vessel of the lung
XA9AN5Blood vessel of the neck
XA8N71Blood vessel of the thorax
XA7P54Blood vessel of hip
XA9M17Blood vessels at lower leg level
XA2769Capillary, not elsewhere classified
XA5TF7Cerebral vasculature
XA4H19Intracranial blood vessels, not elsewhere classified
XA1SX5Extracranial blood vessels, not elsewhere classified

Also indexed as

Blood Vessels

Nearby in Cardiovascular system

XA5999Arteries
XA5J49Veins
XA6H07Heart

PreviousXA5J49 — Veins NextXA6H07 — Heart

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
Endocrine system
Nervous system
Visual system
Auditory system
Circulatory system
Respiratory system
Digestive system
Integumentary system
Musculoskeletal system
3 more
XA4PM9Cardiovascular system
Lymphatic system
XA5999Arteries
XA5J49Veins
XA21T7Blood Vessels
XA6H07Heart
XA6943Blood vessel of the finger
XA7SM4Blood vessel of the thumb
XA6Y60Blood vessels at wrist or hand level
XA08R7Blood vessel of the kidney
XA5K61Blood vessel of the lung
XA9AN5Blood vessel of the neck
XA8N71Blood vessel of the thorax
XA7P54Blood vessel of hip
XA9M17Blood vessels at lower leg level
XA2769Capillary, not elsewhere classified
XA5TF7Cerebral vasculature
XA4H19Intracranial blood vessels, not elsewhere classified
XA1SX5Extracranial blood vessels, not elsewhere classified

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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