ICD-11 Queries

Search Queries

Search ICD-11 entities by term or keyword. The search tool queries the WHO API and returns matching codes ranked by relevance.

“Search ICD-11 for migraine”

Tool: icd11_search

“Find ICD-11 codes for diabetes mellitus”

Tool: icd11_search

Lookup Queries

Retrieve full details for a known ICD-11 entity by its identifier. Returns the entity title, parent classification, chapter, and foundation URI.

“What is ICD-11 entity 8A80?”

Tool: icd11_lookup

Entity:        8A80
Title:         Migraine
Parent:        Headache disorders
Chapter:       08 Diseases of the nervous system
Definition:    Recurrent headache disorder manifesting in attacks
               lasting 4-72 hours with unilateral location,
               pulsating quality, moderate to severe intensity.
Foundation:    http://id.who.int/icd/entity/1334351778

“Look up ICD-11 code 5A11”

Tool: icd11_lookup

Entity:        5A11
Title:         Type 2 diabetes mellitus
Parent:        Diabetes mellitus
Chapter:       05 Endocrine, nutritional or metabolic diseases
Definition:    A type of diabetes resulting from a progressive
               loss of adequate beta-cell insulin secretion,
               frequently on the background of insulin resistance.
Coding note:   Use extension codes to indicate associated
               complications (e.g., diabetic retinopathy,
               diabetic nephropathy).
Exclusions:    Diabetes mellitus in pregnancy (JA63)

Hierarchy Queries

Navigate the ICD-11 classification tree to find parent categories or child entities. Useful for understanding where a code sits within the WHO classification structure.

“What are the subcategories of respiratory diseases in ICD-11?”

Tool: icd11_hierarchy

Children of Chapter 12 | Diseases of the respiratory system:

• CA00-CA0Z Upper respiratory tract disorders
• CA01 Acute upper respiratory infections
• CA07 Chronic rhinosinusitis
• CB00-CB0Z Diseases of the lower respiratory tract
• CA23 Asthma
• CA25 Chronic obstructive pulmonary disease
• CB20-CB2Z Lung diseases due to external agents
• CB40-CB4Z Suppurative and necrotic conditions of lower respiratory tract
• CB70-CB7Z Other diseases of the respiratory system

“Show the parent categories of Asthma in ICD-11”

Tool: icd11_hierarchy

Parents of CA23 | Asthma:

• 12 Diseases of the respiratory system
  • CA20-CA2Z Obstructive airway diseases
    • CA23 Asthma

Coding Queries

Get coding information for an ICD-11 entity including stem code details, postcoordination options, and index terms. Essential for accurate mortality and morbidity coding.

“Get coding info for ICD-11 code BA00”

Tool: icd11_coding

Code:              BA00
Title:             Ischaemic heart diseases
Stem code:         BA00
Block:             BA00-BA0Z Ischaemic heart diseases
Postcoordination:  Allowed with:
                   - Laterality (XK9J)
                   - Severity scale (XS7R)
                   - Anatomy detail via extension codes
Index terms:
  - Ischaemic heart disease
  - Coronary heart disease
  - Coronary artery disease

“What are the coding rules for 5A11?”

Tool: icd11_coding

Code:              5A11
Title:             Type 2 diabetes mellitus
Stem code:         5A11
Block:             5A10-5A14 Diabetes mellitus
Postcoordination:  Allowed with:
                   - Has causing condition (extension)
                   - Associated with (extension)
                   - Anatomical site of complication
Extension codes:
  - Diabetic retinopathy (9B71.0)
  - Diabetic nephropathy (GB61)
  - Diabetic neuropathy (8C10.0)
  - Diabetic foot ulcer (EH90)
Index terms:
  - Type 2 diabetes
  - Non-insulin-dependent diabetes mellitus
  - NIDDM
  - Adult-onset diabetes