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Chapters ENES DE

XExtension Codes
Substances
XM6S30Medicaments
XM4TG8Agents primarily affecting water and nutrition-balance or metabolism
Vitamins and antioxidants
XM4H09B complex vitamins and derivates

XM4PS9 category

Nicotinamide

Also indexed as

NiacinamideNicotinamide

Nearby in B complex vitamins and derivates

XM5HF5Benfotiamine
XM8V93Riboflavin
XM9RX3Biotin
XM4GD2Pyridoxal phosphate
XM41P5Dexpanthenol
XM7398Calcium pantothenate
XM50T4Thiamine
XM42G9sulbutiamine

PreviousXM5HF5 — Benfotiamine NextXM8V93 — Riboflavin

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
Histopathology
Dimensions of injury
Dimensions of external causes
Consciousness
Substances
Diagnosis code descriptors
Capacity or context
Health Devices, Equipment and Supplies
Extension codes of particular relevance to skin diseases
5 more
XM6S30Medicaments
XM9N55Substances, chiefly nonmedicinal
Allergens
XM6WT8Agents primarily affecting blood constituents or immune system
XM3KY1Agents affecting genitourinary system, sex or anabolic hormones
XM26S4Hormones and their synthetic substitutes or antagonists, not elsewhere classified
XM9W63Agents affecting bones, joints or other connective tissue, not elsewhere classified
XM4TG8Agents primarily affecting water and nutrition-balance or metabolism
XM3973Agents primarily affecting the cardiovascular system
XM6CH2Drugs primarily affecting the autonomic nervous system
XM7YD4Drugs used in addictive disorders
XM8014Antivertigo and motion sickness preparations
14 more
Mineral salts and supplements, not elsewhere classified
Electrolytic, caloric and water-balance agents
Diuretics
Mineralocorticoids
Vitamins and antioxidants
Enzymes and digestants
Agents in bile and liver therapy
Antiobesity preparations
Drugs used to treat enzyme deficiencies and disorders of aminoacid, glycolipid and glycoprotein metabolism
1 more
XM5G71Vitamin D
XM4H09B complex vitamins and derivates
XM7XY8Ascorbic acid
XM1PU6Tocopherol
XM9CG5Thioctic acid
XM1SD9Octyl gallate
XM88X6Sodium metabisulfite
XM4BD4Chlorophyll
XM31S0Thioctamide
3 more
XM5HF5Benfotiamine
XM4PS9Nicotinamide
XM8V93Riboflavin
XM9RX3Biotin
XM4GD2Pyridoxal phosphate
XM41P5Dexpanthenol
XM7398Calcium pantothenate
XM50T4Thiamine
XM42G9sulbutiamine
XM2SV4Vitamin B-complex, plain
XM0Y25Potassium aminobenzoate
XM3UQ2Acetiamine
XM3HE8Bisbentiamine
XM5LG0Bisbutiamine
XM8SY7Cetotiamine
5 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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