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ICD-10-CM Codes Q00-Q99 Q20-Q28 Q21 Q21.11
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ICD-10-CM Diagnosis Code Q21.11

Effective Date: 10/01/2022 To 09/30/2025

Secundum atrial septal defect

CMS-HCC-V24 CMS-HCC-V28 RxHCC Age Gender Maternity Acute or Chronic MCC
-- -- -- -- -- -- Acute No
Applicable To for Q21.11:

  • Fenestrated atrial septum

  • Patent or persistent ostium secundum defect (type II)

Back-references to Q21.11
  • Defect, defective Q89.9
    • atrial septal Q21.10
      • ostium secundum type(patent persistent) (type II) Q21.11
      • ostium
        • secundum Q21.11
      • Fenestration, fenestrated see also Imperfect, closure
        • atrial septum Q21.11
        • Imperfect
          • closure(congenital)
            • atrium(secundum) Q21.11
          • Ostium
            • secundum(arteriosum) (defect) (patent) (persistent) Q21.11
            • Patent see also Imperfect, closure
              • ostium secundum(type II) Q21.11
              • Persistence, persistent(congenital)
                • ostium
                  • secundum Q21.11
                  • Chapter, Section and Diagnosis Prefix for Q21.11
                    Q00-Q99 :

                    Congenital malformations, deformations and chromosomal abnormalities

                    Q20-Q28 :

                    Congenital malformations of the circulatory system

                    Q21 :

                    Congenital malformations of cardiac septa