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Chapters ENES DE

XExtension Codes
Anatomy and topography
Functional anatomy
Circulatory system
XA4PM9Cardiovascular system
XA5J49Veins
XA59M2Vein of head, face, and neck
XA1VJ8Venous Sinuses

XA4041 category

Sigmoid sinus

Also indexed as

Sigmoid sinus

Nearby in Venous Sinuses

XA5WN3Cavernous sinus
XA4NJ4Confluence of the sinuses
XA6ZV2Inferior petrosal sinus
XA9ED6Inferior sagittal sinus
XA2SC7Occipital sinus
XA03D2Straight sinus
XA81R3Superior sagittal sinus
XA1YP1Superior petrosal sinus

PreviousXA2SC7 — Occipital sinus NextXA03D2 — Straight sinus

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
XA59M2Vein of head, face, and neck
XA8CT1Vein of thorax
XA0RA8Vein of abdomen
XA26H2Vein of pelvis
XA9WN7Vein of upper extremity
XA76A3Vein of lower extremity
XA60H0Vena cava
XA21F0Vein of the ala nasi
XA9914Vein of the pterygoid canal
XA1RH4Vena comitans of the hypoglossal nerve
XA1K34Venous jugular arch
XA1VJ8Venous Sinuses
XA9VA8Thyroid vein
XA9SD5Palpebral vein
XA52V8Labial vein
XA97T8Auricular vein
55 more
XA5WN3Cavernous sinus
XA4NJ4Confluence of the sinuses
XA6ZV2Inferior petrosal sinus
XA9ED6Inferior sagittal sinus
XA2SC7Occipital sinus
XA4041Sigmoid sinus
XA03D2Straight sinus
XA81R3Superior sagittal sinus
XA1YP1Superior petrosal sinus
XA4289Transverse sinus
XA5255Sphenoparietal sinus
XA3U52Intercavernous sinus
XA9JS4Circular sinus
XA6UW5Petrosquamous sinus
XA6HK7Sinus of the dura mater
1 more

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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