2019 ICD-10-CM Diagnosis Code Q23.2

Congenital mitral stenosis

    2016 2017 2018 2019 Billable/Specific Code POA Exempt
  • Q23.2 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2019 edition of ICD-10-CM Q23.2 became effective on October 1, 2018.
  • This is the American ICD-10-CM version of Q23.2 - other international versions of ICD-10 Q23.2 may differ.
Applicable To
  • Congenital mitral atresia
The following code(s) above Q23.2 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 Q23.2:
  • Q00-Q99
    2019 ICD-10-CM Range Q00-Q99

    Congenital malformations, deformations and chromosomal abnormalities

    Note
    • Codes from this chapter are not for use on maternal records
    Type 2 Excludes
    • inborn errors of metabolism (E70-E88)
    Congenital malformations, deformations and chromosomal abnormalities
Approximate Synonyms
  • Congenital atresia of mitral valve
  • Congenital mitral valve atresia (at birth)
  • Congenital mitral valve stenosis (at birth)
  • Congenital stenosis of mitral valve
  • Congenital supravalvular mitral stenosis
  • Congenital supravalvular mitral stenosis (at birth)
  • Mitral valve atresia, congenital (present at birth)
  • Stenosis (narrowing) of mitral valve, congenital
  • Supravalvular stenosis (narrowing) of mitral valve
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.
  • Q23.2 is considered exempt from POA reporting.
ICD-10-CM Q23.2 is grouped within Diagnostic Related Group(s) (MS-DRG v36.0):
  • 306 Cardiac congenital and valvular disorders with mcc
  • 307 Cardiac congenital and valvular disorders without mcc

Convert Q23.2 to ICD-9-CM

Code History
  • 2016 (effective 10/1/2015): New code (first year of non-draft ICD-10-CM)
  • 2017 (effective 10/1/2016): No change
  • 2018 (effective 10/1/2017): No change
  • 2019 (effective 10/1/2018): No change
Code annotations containing back-references to Q23.2:
  • Type 1 Excludes: I34
    ICD-10-CM Diagnosis Code I34

    Nonrheumatic mitral valve disorders

      2016 2017 2018 2019 Non-Billable/Non-Specific Code
    Type 1 Excludes
    • mitral valve disease (I05.9)
    • mitral valve failure (I05.8)
    • mitral valve stenosis (I05.0)
    • mitral valve disorder of unspecified cause with diseases of aortic and/or tricuspid valve(s) (I08.-)
    • mitral valve disorder of unspecified cause with mitral stenosis or obstruction (I05.0)
    • mitral valve disorder specified as congenital (Q23.2, Q23.9)
    • mitral valve disorder specified as rheumatic (I05.-)

Diagnosis Index entries containing back-references to Q23.2:
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • heart Q24.9
      ICD-10-CM Diagnosis Code Q24.9

      Congenital malformation of heart, unspecified

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital anomaly of heart
      • Congenital disease of heart
      • valve NEC Q24.8
        ICD-10-CM Diagnosis Code Q24.8

        Other specified congenital malformations of heart

          2016 2017 2018 2019 Billable/Specific Code POA Exempt
        Applicable To
        • Congenital diverticulum of left ventricle
        • Congenital malformation of myocardium
        • Congenital malformation of pericardium
        • Malposition of heart
        • Uhl's disease
    • mitral (leaflets) (valve) Q23.9
      ICD-10-CM Diagnosis Code Q23.9

      Congenital malformation of aortic and mitral valves, unspecified

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      • stenosis Q23.2
  • Atresia, atretic
  • Deformity Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • mitral (leaflets) (valve) I05.8
      ICD-10-CM Diagnosis Code I05.8

      Other rheumatic mitral valve diseases

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Rheumatic mitral (valve) failure
      • parachute Q23.2
      • stenosis, congenital Q23.2
  • Disease, diseased - see also Syndrome
    • Duroziez's Q23.2 (congenital mitral stenosis)
  • Duroziez's disease Q23.2 (congenital mitral stenosis)
  • Fusion, fused (congenital)
    • cusps, heart valve NEC Q24.8
      ICD-10-CM Diagnosis Code Q24.8

      Other specified congenital malformations of heart

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital diverticulum of left ventricle
      • Congenital malformation of myocardium
      • Congenital malformation of pericardium
      • Malposition of heart
      • Uhl's disease
      • mitral Q23.2
    • commissure, mitral valve Q23.2
  • Parachute mitral valve Q23.2
  • Stenosis, stenotic (cicatricial) - see also Stricture
    • heart valve (congenital) Q24.8
      ICD-10-CM Diagnosis Code Q24.8

      Other specified congenital malformations of heart

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital diverticulum of left ventricle
      • Congenital malformation of myocardium
      • Congenital malformation of pericardium
      • Malposition of heart
      • Uhl's disease
      • mitral Q23.2
    • mitral (chronic) (inactive) (valve) I05.0
      ICD-10-CM Diagnosis Code I05.0

      Rheumatic mitral stenosis

        2016 2017 2018 2019 Billable/Specific Code
      Applicable To
      • Mitral (valve) obstruction (rheumatic)
      • congenital Q23.2
    • valve (cardiac) (heart) I38
      - see also Endocarditis
      ICD-10-CM Diagnosis Code I38

      Endocarditis, valve unspecified

        2016 2017 2018 2019 Billable/Specific Code
      Includes
      • endocarditis (chronic) NOS
      • valvular incompetence NOS
      • valvular insufficiency NOS
      • valvular regurgitation NOS
      • valvular stenosis NOS
      • valvulitis (chronic) NOS
      Type 1 Excludes
      • congenital insufficiency of cardiac valve NOS (Q24.8)
      • congenital stenosis of cardiac valve NOS (Q24.8)
      • endocardial fibroelastosis (I42.4)
      • endocarditis specified as rheumatic (I09.1)
      • congenital Q24.8
        ICD-10-CM Diagnosis Code Q24.8

        Other specified congenital malformations of heart

          2016 2017 2018 2019 Billable/Specific Code POA Exempt
        Applicable To
        • Congenital diverticulum of left ventricle
        • Congenital malformation of myocardium
        • Congenital malformation of pericardium
        • Malposition of heart
        • Uhl's disease
        • mitral Q23.2
  • Stricture - see also Stenosis
    • heart - see also Disease, heart
      • valve I38
        - see also Endocarditis
        ICD-10-CM Diagnosis Code I38

        Endocarditis, valve unspecified

          2016 2017 2018 2019 Billable/Specific Code
        Includes
        • endocarditis (chronic) NOS
        • valvular incompetence NOS
        • valvular insufficiency NOS
        • valvular regurgitation NOS
        • valvular stenosis NOS
        • valvulitis (chronic) NOS
        Type 1 Excludes
        • congenital insufficiency of cardiac valve NOS (Q24.8)
        • congenital stenosis of cardiac valve NOS (Q24.8)
        • endocardial fibroelastosis (I42.4)
        • endocarditis specified as rheumatic (I09.1)
        • mitral Q23.2
    • valve (cardiac) (heart) - see also Endocarditis
  • Supernumerary (congenital)
    • cusps, heart valve NEC Q24.8
      ICD-10-CM Diagnosis Code Q24.8

      Other specified congenital malformations of heart

        2016 2017 2018 2019 Billable/Specific Code POA Exempt
      Applicable To
      • Congenital diverticulum of left ventricle
      • Congenital malformation of myocardium
      • Congenital malformation of pericardium
      • Malposition of heart
      • Uhl's disease
      • mitral Q23.2
    • mitral cusps Q23.2

ICD-10-CM Codes Adjacent To Q23.2
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
Q24.3 Pulmonary infundibular stenosis
Q24.4 Congenital subaortic stenosis

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