ICD-10-CM Code Q24.4

Congenital subaortic stenosis

Version 2020 Billable Code POA Exempt

Valid for Submission

Q24.4 is a billable code used to specify a medical diagnosis of congenital subaortic stenosis. The code is valid for the year 2020 for the submission of HIPAA-covered transactions. The ICD-10-CM code Q24.4 might also be used to specify conditions or terms like congenital muscular subaortic stenosis, congenital subaortic stenosis, congenital subaortic stenosis, congenital subaortic stenosis due to fibromuscular shelf, congenital subaortic stenosis due to restrictive ventricular septal defect associated with functionally univentricular heart, congenital subaortic stenosis of tunnel type, etc The code is exempt from present on admission (POA) reporting for inpatient admissions to general acute care hospitals.

ICD-10:Q24.4
Short Description:Congenital subaortic stenosis
Long Description:Congenital subaortic stenosis

Index to Diseases and Injuries

The Index to Diseases and Injuries is an alphabetical listing of medical terms, with each term mapped to one or more ICD-10 code(s). The following references for the code Q24.4 are found in the index:


Synonyms

The following clinical terms are approximate synonyms or lay terms that might be used to identify the correct diagnosis code:

  • Congenital muscular subaortic stenosis
  • Congenital subaortic stenosis
  • Congenital subaortic stenosis
  • Congenital subaortic stenosis due to fibromuscular shelf
  • Congenital subaortic stenosis due to restrictive ventricular septal defect associated with functionally univentricular heart
  • Congenital subaortic stenosis of tunnel type
  • Dynamic subaortic stenosis
  • Functionally univentricular heart
  • Parachute malformation of mitral valve
  • Shone complex
  • Subaortic stenosis
  • Subaortic stenosis due to common atrioventricular valve
  • Subaortic stenosis due to restrictive ventricular septal defect in functionally univentricular heart
  • Subneoaortic valve stenosis
  • Supramitral left atrial ring

Diagnostic Related Groups

The ICD-10 code Q24.4 is grouped in the following groups for version MS-DRG V37.0 What are Diagnostic Related Groups?
The Diagnostic Related Groups (DRGs) are a patient classification scheme which provides a means of relating the type of patients a hospital treats. The DRGs divides all possible principal diagnoses into mutually exclusive principal diagnosis areas referred to as Major Diagnostic Categories (MDC).
applicable from 10/01/2019 through 09/30/2020.

  • 306 - CARDIAC CONGENITAL AND VALVULAR DISORDERS WITH MCC
  • 307 - CARDIAC CONGENITAL AND VALVULAR DISORDERS WITHOUT MCC

Present on Admission (POA)

Q24.4 is exempt from POA reporting - The Present on Admission (POA) indicator is used for diagnosis codes included in claims involving inpatient admissions to general acute care hospitals. POA indicators must be reported to CMS on each claim to facilitate the grouping of diagnoses codes into the proper Diagnostic Related Groups (DRG). CMS publishes a listing of specific diagnosis codes that are exempt from the POA reporting requirement. Review other POA exempt codes here .

CMS POA Indicator Options and Definitions
POA Indicator CodePOA Reason for CodeCMS will pay the CC/MCC DRG?
YDiagnosis was present at time of inpatient admission.YES
NDiagnosis was not present at time of inpatient admission.NO
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.NO
WClinically undetermined - unable to clinically determine whether the condition was present at the time of inpatient admission.YES
1Unreported/Not used - Exempt from POA reporting. NO

Convert Q24.4 to ICD-9

  • 746.81 - Cong subaortic stenosis

Code Classification

  • Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
    • Congenital malformations of the circulatory system (Q20-Q28)
      • Other congenital malformations of heart (Q24)

Code History

  • FY 2016 - New Code, effective from 10/1/2015 through 9/30/2016
    (First year ICD-10-CM implemented into the HIPAA code set)
  • FY 2017 - No Change, effective from 10/1/2016 through 9/30/2017
  • FY 2018 - No Change, effective from 10/1/2017 through 9/30/2018
  • FY 2019 - No Change, effective from 10/1/2018 through 9/30/2019
  • FY 2020 - No Change, effective from 10/1/2019 through 9/30/2020

Information for Patients


Congenital Heart Defects

A congenital heart defect is a problem with the structure of the heart. It is present at birth. Congenital heart defects are the most common type of birth defect. The defects can involve the walls of the heart, the valves of the heart, and the arteries and veins near the heart. They can disrupt the normal flow of blood through the heart. The blood flow can slow down, go in the wrong direction or to the wrong place, or be blocked completely.

Doctors use a physical exam and special heart tests to diagnose congenital heart defects. They often find severe defects during pregnancy or soon after birth. Signs and symptoms of severe defects in newborns include

  • Rapid breathing
  • Cyanosis - a bluish tint to the skin, lips, and fingernails
  • Fatigue
  • Poor blood circulation

Many congenital heart defects cause few or no signs and symptoms. They are often not diagnosed until children are older.

Many children with congenital heart defects don't need treatment, but others do. Treatment can include medicines, catheter procedures, surgery, and heart transplants. The treatment depends on the type of the defect, how severe it is, and a child's age, size, and general health.

NIH: National Heart, Lung, and Blood Institute


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Heart Valve Diseases

Your heart has four valves. Normally, these valves open to let blood flow through or out of your heart, and then shut to keep it from flowing backward. But sometimes they don't work properly. If they don't, you could have

  • Regurgitation - when blood leaks back through the valve in the wrong direction
  • Mitral valve prolapse - when one of the valves, the mitral valve, has "floppy" flaps and doesn't close tightly. It's one of the most common heart valve conditions. Sometimes it causes regurgitation.
  • Stenosis - when the valve doesn't open enough and blocks blood flow

Valve problems can be present at birth or caused by infections, heart attacks, or heart disease or damage. The main sign of heart valve disease is an unusual heartbeat sound called a heart murmur. Your doctor can hear a heart murmur with a stethoscope. But many people have heart murmurs without having a problem. Heart tests can show if you have a heart valve disease. Some valve problems are minor and do not need treatment. Others might require medicine, medical procedures, or surgery to repair or replace the valve.

NIH: National Heart, Lung, and Blood Institute


[Learn More]