All ICD10 Codes
Q28Non-billable

Other congenital malformations of circulatory system

Congenital Malformations, Deformations and Chromosomal Abnormalities·Congenital malformations of the circulatory system (Q20-Q28)·category·FY 2026

Use a more specific code (6 billable)
Q28.0Arteriovenous malformation of precerebral vesselsQ28.1Other malformations of precerebral vesselsQ28.2Arteriovenous malformation of cerebral vesselsQ28.3Other malformations of cerebral vesselsQ28.8Other specified congenital malformations of circulatory systemQ28.9Congenital malformation of circulatory system, unspecified

CH17 Parent Instructions

Excludes2(Not included here. Code separately if applicable.)
  • inborn errors of metabolism (E70-E88)

Instructional Notes

Excludes1(Not coded here. Use a different code.)
  • congenital aneurysm NOS (Q27.8)
  • congenital coronary aneurysm (Q24.5)
  • ruptured cerebral arteriovenous malformation (I60.8)
  • ruptured malformation of precerebral vessels (I72.0)
Excludes2(Not included here. Code separately if applicable.)
  • congenital peripheral aneurysm (Q27.8)
  • congenital pulmonary aneurysm (Q25.79)
  • congenital retinal aneurysm (Q14.1)

Clinical Hierarchy

BillableHas subcodes
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q20-Q28Congenital malformations of the circulatory system (Q20-Q28)
Q28Other congenital malformations of circulatory systemNot billable
Q28.0Arteriovenous malformation of precerebral vesselsBillable
Q28.1Other malformations of precerebral vesselsBillable
Q28.2Arteriovenous malformation of cerebral vesselsBillable
Q28.3Other malformations of cerebral vesselsBillable
Q28.8Other specified congenital malformations of circulatory systemBillable
Q28.9Congenital malformation of circulatory system, unspecifiedBillable

MS-DRG Classification

2026

No direct MS-DRG triggers identified.