ICD-10-CM Current in FY 2027
Q23.4
Hypoplastic left heart syndrome
- Release
- FY 2027
- Effective
Hierarchy
Where Q23.4 sits in the official hierarchy. Each level is the code it is classified under.
- Q23 Parent Congenital malformations of aortic and mitral valves
- Q23.4 This code Hypoplastic left heart syndrome
Version History
How Q23.4 appears in each release imported from the official files, newest first.
-
FY 2027 Effective
CurrentHypoplastic left heart syndrome
-
FY 2026 Effective
UnchangedHypoplastic left heart syndrome
Related Codes
Other codes under Q23
- Q23.0 Congenital stenosis of aortic valve Billable
- Q23.1 Congenital insufficiency of aortic valve Billable
- Q23.2 Congenital mitral stenosis Billable
- Q23.3 Congenital mitral insufficiency Billable
- Q23.8 Other congenital malformations of aortic and mitral valves
- Q23.9 Congenital malformation of aortic and mitral valves, unspecified Billable
Codes whose official notes reference Q23.4
Data Source
Code information on this page is derived from the FY 2027 ICD-10-CM files published by CDC NCHS and CMS.
- Release
- FY 2027
- Effective
- Source file
- icd10cm-code-descriptions-2027.zip
Official ICD-10-CM source files (opens in a new tab)
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