2020 ICD-10-CM Diagnosis Code Q23.8

Other congenital malformations of aortic and mitral valves

    2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
  • Q23.8 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
  • The 2020 edition of ICD-10-CM Q23.8 became effective on October 1, 2019.
  • This is the American ICD-10-CM version of Q23.8 - other international versions of ICD-10 Q23.8 may differ.
The following code(s) above Q23.8 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 Q23.8:
  • Q00-Q99
    2020 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
  • Cleft leaflet of mitral valve
  • Congenital (at birth) cleft leaflet of mitral valve
  • Congenital mitral valve cleft leaflet (at birth)
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.
  • Q23.8 is considered exempt from POA reporting.
ICD-10-CM Q23.8 is grouped within Diagnostic Related Group(s) (MS-DRG v37.0):
  • 306 Cardiac congenital and valvular disorders with mcc
  • 307 Cardiac congenital and valvular disorders without mcc

Convert Q23.8 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
  • 2020 (effective 10/1/2019): No change

Diagnosis Index entries containing back-references to Q23.8:
  • Anomaly, anomalous (congenital) (unspecified type) Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
    • mitral (leaflets) (valve) Q23.9
      ICD-10-CM Diagnosis Code Q23.9

      Congenital malformation of aortic and mitral valves, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      • specified NEC Q23.8
  • Deformity Q89.9
    ICD-10-CM Diagnosis Code Q89.9

    Congenital malformation, unspecified

      2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
    Applicable To
    • Congenital anomaly NOS
    • Congenital deformity NOS
  • Malformation (congenital) - see also Anomaly
    • aortic valve Q23.9
      ICD-10-CM Diagnosis Code Q23.9

      Congenital malformation of aortic and mitral valves, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      • specified NEC Q23.8
    • mitral valve Q23.9
      ICD-10-CM Diagnosis Code Q23.9

      Congenital malformation of aortic and mitral valves, unspecified

        2016 2017 2018 2019 2020 Billable/Specific Code POA Exempt
      • specified NEC Q23.8
  • Quadricuspid aortic valve Q23.8
  • 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 2020 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
      • aortic Q23.8
    • aortic cusps Q23.8

ICD-10-CM Codes Adjacent To Q23.8
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
Q24.5 Malformation of coronary vessels
Q24.6 Congenital heart block
Q24.8 Other specified congenital malformations of heart

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