All ICD10 Codes

Q21.15

Billable
ChapterQ00–Q99
Ranksubcategory
Official Description

Inferior sinus venosus atrial septal defect

Metadata & Insights
  • •Billable/specific code (valid for reimbursement).
  • •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).

Instructional Notes

Includes
  • Inferior vena cava type atrial septal defect
General instructions are available for the parent sections:
View CH17 NotesView Q21 NotesView Q21.1 Notes

Clinical Hierarchy

BillableHas subcodes
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q20-Q28Congenital malformations of the circulatory system (Q20-Q28)
Q21Congenital malformations of cardiac septa
Q21.1Atrial septal defect
Q21.15Inferior sinus venosus atrial septal defectBillable

Applicable Ancestor Context

The following parent sections contain instructions or notes that apply to Q21.15:

subcategoryQ21.1
Atrial septal defect
View context instructions
categoryQ21
Congenital malformations of cardiac septa
View context instructions
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructions

Code History

  • FY 2022: This code replaced Q21.1 (Atrial septal defect)

MS-DRG Classification

2026 v43.1

This code is grouped within the following Diagnosis Related Group(s) for clinical reimbursement:

DRG 306
Cardiac Congenital and Valvular Disorders with MCC
DRG 307
Cardiac Congenital and Valvular Disorders without MCC

Cross Reference

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