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ICD-10-CM Code Q24.4
Congenital subaortic stenosis

BILLABLE
Billable Code
Billable codes are sufficient justification for admission to an acute care hospital when used a principal diagnosis.
POA Exempt
POA Exempt Code
The Center for Medicare & Medicaid Services (CMS) requires medical coders to indicate whether or not a condition was present at the time of admission, in order to properly assign MS-DRG codes. This "Present On Admission" (POA) indicator is recorded on CMS form 4010A.
| ICD-10 from 2011 - 2016

Q24.4 is a billable ICD code used to specify a diagnosis of congenital subaortic stenosis. A 'billable code' is detailed enough to be used to specify a medical diagnosis.

POA Indicators on CMS form 4010A are as follows:

IndicatorMeaningCMS Will Pay CC/MCC DRG Costs
YDiagnosis was present at time of inpatient admissionYes
NDiagnosis was not present at time of inpatient admissionNo
UDocumentation insufficient to determine if the condition was present at the time of inpatient admission.No
WClinically undetermined. Provider unable to clinically determine whether the condition was present at the time of inpatient admission.Yes
1Exempt from POA reportingNo


The ICD code Q24 is used to code Congenital heart defect

Congenital heart defect (CHD), also known as a congenital heart anomaly or congenital heart disease, is a problem in the structure of the heart that is present at birth. Signs and symptoms depend on the specific type of problem. Symptoms can vary from none to life-threatening. When present they may include rapid breathing, bluish skin, poor weight gain, and feeling tired. It does not cause chest pain. Most congenital heart problems do not occur with other diseases. Complications that can result from heart defects include heart failure.

Specialty: Cardiology
MeSH Codes: D006330, D006330, D006330
ICD 9 Codes: 745, 746, 747

The normal structure of the heart (left) in comparison to two common locations for a ventricular septal defect (right), the most common form of congenital heart defect.

Source: Wikipedia

MS-DRG Mapping

  • DRG Group #306-307 - Cardiac congenital and valvular disorders with MCC.
  • DRG Group #306-307 - Cardiac congenital and valvular disorders without MCC.

Related Concepts SNOMET-CT

  • Congenital subaortic stenosis due to fibromuscular shelf (disorder)
  • Subaortic stenosis due to common atrioventricular valve (disorder)
  • Shone complex (disorder)

Coding Advice SNOMET-CT

  • Consider additional code to identify specific condition or disease

ICD-10-CM Alphabetical Index References for 'Q24.4 - Congenital subaortic stenosis'

The ICD-10-CM Alphabetical Index links the below-listed medical terms to the ICD code Q24.4. Click on any term below to browse the alphabetical index.

Equivalent ICD-9 Code GENERAL EQUIVALENCE MAPPINGS (GEM)

Subaortic stenosis (exact match)

This is the official exact match mapping between ICD9 and ICD10, as provided by the General Equivalency mapping crosswalk. This means that in all cases where the ICD9 code 746.81 was previously used, Q24.4 is the appropriate modern ICD10 code.


Parent Code: Q24 - Other congenital malformations of heart

** This Document Provided By ICD.Codes **
Source: http://icd.codes/icd10cm/Q244