Q23.4
BillableHypoplastic left heart syndrome
Hypoplastic left heart syndrome
Coding Notes
Excludes 2
Conditions not included here, but the patient may have both
Related Codes(6)
Q23.0Congenital stenosis of aortic valve
Q23.1Congenital insufficiency of aortic valve
Q23.2Congenital mitral stenosis
Q23.3Congenital mitral insufficiency
Q23.8Other congenital malformations of aortic and mitral valves
Q23.9Congenital malformation of aortic and mitral valves, unsp
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(31)
SNOMED CT
UMLS
- HLH - Hypoplastic left heart syndromeC0152101
- HLHS - Hypoplastic left heart syndromeC0152101
- Hypoplastic Left Heart SyndromeC0152101
- Hypoplastic left heartC0152101
- Hypoplastic left heart syndromeC0152101
- Hypoplastic left heart syndrome (disorder)C0152101
- Left Heart Hypoplasia SyndromeC0152101
- Left Heart Syndrome, HypoplasticC0152101
- Underdeveloped left heartC0152101
- heart hypoplastic leftC0152101
- heart hypoplastic left syndromeC0152101
- hypoplasia left heartC0152101
- hypoplastic left heartC0152101
- hypoplastic left heart syndromeC0152101
- left heart hypoplasticC0152101
- left hypoplastic heartC0152101
Clinical Terms
- HLH - Hypoplastic left heart syndrome
- heart hypoplastic left syndrome
- Hypoplastic left heart syndrome (disorder)
- Left Heart Hypoplasia Syndrome
- Hypoplastic left heart
- Left Heart Syndrome, Hypoplastic
- left hypoplastic heart
- Underdeveloped left heart
- heart hypoplastic left
- HLHS - Hypoplastic left heart syndrome
- hypoplasia left heart
- left heart hypoplastic
Frequently Asked Questions
What is the ICD-10 code for hypoplastic left heart syndrome?
The ICD-10-CM code for hypoplastic left heart syndrome is Q23.4. The full clinical description is "Hypoplastic left heart syndrome". Q23.4 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code Q23.4 mean?
ICD-10-CM code Q23.4 represents “Hypoplastic left heart syndrome”. It is classified under Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities and is a billable/specific code that can be used on a claim.
Is Q23.4 a billable code?
Yes, Q23.4 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is Q23.4 in?
Q23.4 is in Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (codes Q00-Q99).
What SNOMED CT codes does Q23.4 map to?
Q23.4 maps to 1 SNOMED CT concept: 62067003. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for Q23.4?
Q23.4 is linked to 1 UMLS Concept Unique Identifier: C0152101. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does Q23.4 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like hypoplastic left heart syndrome affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of Q23.4?
Q23.4 maps to the ICD-11 code: LA89.3 (Hypoplastic left heart syndrome).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.