ICD-10-CM Codes
Q00-Q99
Q20-Q28
Q24-
2023 ICD-10-CM Diagnosis Code Q24.4

2023 ICD-10-CM Diagnosis Code Q24.4

Congenital subaortic stenosis

2016

2017

2018

2019

2020

2021

2022

2023

Billable/Specific Code

POA Exempt

Q24.4 is a billable/specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes.
The 2023 edition of ICD-10-CM Q24.4 became effective on October 1, 2022.
This is the American ICD-10-CM version of Q24.4 - other international versions of ICD-10 Q24.4 may differ.

The following code(s) above Q24.4 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 Q24.4:

Q00-Q99
2023 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
Q24
ICD-10-CM Diagnosis Code Q24
Other congenital malformations of heart
Type 1 Excludes
- endocardial fibroelastosis (I42.4)
Other congenital malformations of heart

Approximate Synonyms

Congenital subvalvular aortic stenosis (at birth)
Subvalvular aortic stenosis, congenital (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.

Q24.4 is considered exempt from POA reporting.

ICD-10-CM Q24.4 is grouped within Diagnostic Related Group(s) (MS-DRG v40.0):

306 Cardiac congenital and valvular disorders with mcc
307 Cardiac congenital and valvular disorders without mcc

Convert Q24.4 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
2021 (effective 10/1/2020): No change
2022 (effective 10/1/2021): No change
2023 (effective 10/1/2022): No change

Code annotations containing back-references to Q24.4:

Type 1 Excludes: Q23.0

ICD-10-CM Diagnosis Code Q23.0
Congenital stenosis of aortic valve
Applicable To
- Congenital aortic atresia
- Congenital aortic stenosis NOS
Type 1 Excludes
- congenital stenosis of aortic valve in hypoplastic left heart syndrome (Q23.4)
- congenital subaortic stenosis (Q24.4)
- supravalvular aortic stenosis (congenital) (Q25.3)

Diagnosis Index entries containing back-references to Q24.4:

Anomaly, anomalous (congenital) (unspecified type) Q89.9
ICD-10-CM Diagnosis Code Q89.9
Congenital malformation, unspecified
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 2020 2021 2022 2023 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 2020 2021 2022 2023 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
      - stenosis Q23.0
        ICD-10-CM Diagnosis Code Q23.0
        Congenital stenosis of aortic valve
        2016 2017 2018 2019 2020 2021 2022 2023 Billable/Specific Code POA Exempt
        Applicable To
        Congenital aortic atresia
        Congenital aortic stenosis NOS
        Type 1 Excludes
        congenital stenosis of aortic valve in hypoplastic left heart syndrome (Q23.4)
        congenital subaortic stenosis (Q24.4)
        supravalvular aortic stenosis (congenital) (Q25.3)
        subaortic Q24.4
Stenosis, stenotic (cicatricial) - see also Stricture
- subaortic (congenital) Q24.4
Stricture - see also Stenosis
- subaortic Q24.4

ICD-10-CM Codes Adjacent To Q24.4

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

Q24.9 Congenital malformation of heart, unspecified

Q25 Congenital malformations of great arteries

Q25.0 Patent ductus arteriosus

Q25.1 Coarctation of aorta

Q25.2 Atresia of aorta

Q25.21 Interruption of aortic arch

Q25.29 Other atresia of aorta

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

2023 ICD-10-CM Diagnosis Code Q24.4

Congenital subaortic stenosis

Congenital malformations, deformations and chromosomal abnormalities

Other congenital malformations of heart

Congenital stenosis of aortic valve

Congenital malformation, unspecified

Congenital malformation of heart, unspecified

Other specified congenital malformations of heart

Congenital stenosis of aortic valve