2018

  1. ICD-10-CM Codes
    2. ›
  2. Q00-Q99 Congenital malformations, deformations and chromosomal abnormalities
    3. ›
  3. Q20-Q28 Congenital malformations of the circulatory system
    4. ›
  4. Q23- Congenital malformations of aortic and mitral valves
    5. ›

2018 ICD-10-CM Diagnosis Code Q23.0

Congenital stenosis of aortic valve

Applicable To
  • Congenital aortic atresia
  • Congenital aortic stenosis NOS
Type 1 Excludes
Type 1 Excludes Help
A type 1 excludes note is a pure excludes. It means "not coded here". A type 1 excludes note indicates that the code excluded should never be used at the same time as Q23.0. A type 1 excludes note is for used for when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
  • congenital stenosis of aortic valve in hypoplastic left heart syndrome (
    ICD-10-CM Diagnosis Code Q23.4

    Hypoplastic left heart syndrome

      2016 2017 2018 Billable/Specific Code POA Exempt
    Q23.4
    )
  • congenital subaortic stenosis (
    ICD-10-CM Diagnosis Code Q24.4

    Congenital subaortic stenosis

      2016 2017 2018 Billable/Specific Code POA Exempt
    Q24.4
    )
  • supravalvular aortic stenosis (congenital) (
    ICD-10-CM Diagnosis Code Q25.3

    Supravalvular aortic stenosis

      2016 2017 2018 Billable/Specific Code POA Exempt
    Type 1 Excludes
    • congenital aortic stenosis NOS (Q23.0)
    • congenital stenosis of aortic valve (Q23.0)
    Q25.3
    )
The following code(s) above Q23.0 contain annotation back-references
Annotation Back-References
In this context, annotation back-references refer to codes that contain:
  • Applicable To annotations, or
  • Code Also annotations, or
  • Code First annotations, or
  • Excludes1 annotations, or
  • Excludes2 annotations, or
  • Includes annotations, or
  • Note annotations, or
  • Use Additional annotations
that may be applicable to Q23.0:
  • Q00-Q99
    2018 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal or fetal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
Approximate Synonyms Present On Admission
POA Help
"Present On Admission" is defined as present at the time the order for inpatient admission occurs — conditions that develop during an outpatient encounter, including emergency department, observation, or outpatient surgery, are considered POA.
 ICD-10-CM Q23.0 is grouped within Diagnostic Related Group(s) (MS-DRG v35.0):

Convert Q23.0 to ICD-9-CM

Code History
Code annotations containing back-references to Q23.0:

Diagnosis Index entries containing back-references to Q23.0:

ICD-10-CM Codes Adjacent To Q23.0
Q22.0 Pulmonary valve atresia
Q22.1 Congenital pulmonary valve stenosis
Q22.2 Congenital pulmonary valve insufficiency
Q22.3 Other congenital malformations of pulmonary valve
Q22.4 Congenital tricuspid stenosis
Q22.5 Ebstein's anomaly
Q22.6 Hypoplastic right heart syndrome
Q22.8 Other congenital malformations of tricuspid valve
Q22.9 Congenital malformation of tricuspid valve, unspecified
Q23 Congenital malformations of aortic and mitral valves
Q23.0 Congenital stenosis of aortic valve
Q23.1 Congenital insufficiency of aortic valve
Q23.2 Congenital mitral stenosis
Q23.3 Congenital mitral insufficiency
Q23.4 Hypoplastic left heart syndrome
Q23.8 Other congenital malformations of aortic and mitral valves
Q23.9 Congenital malformation of aortic and mitral valves, unspecified
Q24 Other congenital malformations of heart
Q24.0 Dextrocardia
Q24.1 Levocardia
Q24.2 Cor triatriatum

Reimbursement claims with a date of service on or after October 1, 2015 require the use of ICD-10-CM codes.