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Chapters ENES DE

XExtension Codes
Anatomy and topography
Functional anatomy
Digestive system
XA8182Mouth
XA5TW5Vestibule of mouth

XA0S17 category

Retromolar region

Also indexed as

Retromolar areaRetromolar regionRetromolar triangleRetromolar trigone

Nearby in Vestibule of mouth

XA9072Labial mucosa of upper lip
XA72W2Labial mucosa of lower lip
XA8WB3Buccal mucosa
XA44M8Labial sulcus
XA6A73Buccal sulcus

PreviousXA8WB3 — Buccal mucosa NextXA44M8 — Labial sulcus

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
XA8182Mouth
XA5T23Salivary gland apparatus
XA93V5Pharynx
XA9607Gastrointestinal tract
XA0W19Hepatobiliary system
XA3QC5Pancreas
XA0KZ0Peritoneum
XA5TW5Vestibule of mouth
XA54T3Gingivae
XA6CZ2Teeth
XA1WN1Oral cavity
XA6NQ7Oral mucosa
XA2KN0Other and unspecified parts of mouth
XA9072Labial mucosa of upper lip
XA72W2Labial mucosa of lower lip
XA8WB3Buccal mucosa
XA0S17Retromolar region
XA44M8Labial sulcus
XA6A73Buccal sulcus

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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