11

ICD-11 MMS 2026-01

Diseases of the circulatory system

Description

This refers to diseases of the organ system that passes nutrients (such as amino acids, electrolytes and lymph), gases, hormones, blood cells, etc. to and from cells in the body to help fight diseases, stabilize body temperature and pH, and to maintain homeostasis.

Excludes

  • 01 – Certain infectious or parasitic diseases
  • 05 – Endocrine, nutritional or metabolic diseases
  • 18 – Complications of pregnancy, childbirth and the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 20 – Congenital malformations, deformations and chromosomal abnormalities
  • 22 – Injury, poisoning or certain other consequences of external causes

Child codes

  • BC20 – Chronic rheumatic heart diseases, not elsewhere classified
  • BE20 – Embolism, so stated
  • BE21 – Thromboembolism, so stated
  • BE2Y – Other specified diseases of the circulatory system
  • BE2Z – Diseases of the circulatory system, unspecified

Foundation children elsewhere

  • JB64.4 – Diseases of the circulatory system complicating pregnancy, childbirth or the puerperium

Sibling codes

  • 01 – Certain infectious or parasitic diseases
  • 02 – Neoplasms
  • 03 – Diseases of the blood or blood-forming organs
  • 04 – Diseases of the immune system
  • 05 – Endocrine, nutritional or metabolic diseases
  • 06 – Mental, behavioural or neurodevelopmental disorders
  • 07 – Sleep-wake disorders
  • 08 – Diseases of the nervous system
  • 09 – Diseases of the visual system
  • 10 – Diseases of the ear or mastoid process
  • 12 – Diseases of the respiratory system
  • 13 – Diseases of the digestive system
  • 14 – Diseases of the skin
  • 15 – Diseases of the musculoskeletal system or connective tissue
  • 16 – Diseases of the genitourinary system
  • 17 – Conditions related to sexual health
  • 18 – Pregnancy, childbirth or the puerperium
  • 19 – Certain conditions originating in the perinatal period
  • 20 – Developmental anomalies
  • 21 – Symptoms, signs or clinical findings, not elsewhere classified
  • 22 – Injury, poisoning or certain other consequences of external causes
  • 23 – External causes of morbidity or mortality
  • 24 – Factors influencing health status or contact with health services
  • 25 – Codes for special purposes
  • 26 – Supplementary Chapter Traditional Medicine Conditions
  • V – Supplementary section for functioning assessment
  • X – Extension Codes

Foundation entity

Diseases of the circulatory system – http://id.who.int/icd/entity/426429380