Q21.13

Coronary sinus atrial septal defect

Billable / specificPOA exempt

Q21.13 is a billable, specific ICD-10-CM code that can be used to indicate a diagnosis for reimbursement purposes in FY2027.

Inclusion terms

Applicable to

  • Coronary sinus defect
  • Unroofed coronary sinus

Includes (from Q21)

  • Note: Codes from this chapter are not for use on maternal records

Excludes1

Not coded here — never report together with this code.

  • acquired cardiac septal defect (I51.0) (from Q21)

Excludes2

Not included here — may be reported together when both conditions exist.

  • ostium primum atrial septal defect (type I) (Q21.20) (from Q21.1)
  • inborn errors of metabolism (E70-E88) (from Q21)

Also known as

  • Coronary sinus defect
  • Unroofed coronary sinus
  • Defect, defective, atrial septal, coronary sinus
  • Defect, defective, coronary sinus

Parent code

  • Q21.1Atrial septal defectHeader

Related codes

  • Q21.10Atrial septal defect, unspecifiedBillable
  • Q21.11Secundum atrial septal defectBillable
  • Q21.12Patent foramen ovaleBillable
  • Q21.14Superior sinus venosus atrial septal defectBillable
  • Q21.15Inferior sinus venosus atrial septal defectBillable
  • Q21.16Sinus venosus atrial septal defect, unspecifiedBillable
  • Q21.19Other specified atrial septal defectBillable

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