Q20-Q28
Non-Billable
ChapterQ00–Q99
Rankblock
Official Description
Congenital malformations of the circulatory system (Q20-Q28)
Metadata & Insights
- •2026 ICD-10-CM Edition - Effective October 1, 2025.
- •Non-billable category (requires more specific sub-code).
- •Chapter 17: Congenital Malformations, Deformations and Chromosomal Abnormalities (Q00-Q99).
CH17 Parent Instructions
Excludes2(Not included here)
Clinical Hierarchy
CH17Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
Q20-Q28Congenital malformations of the circulatory system (Q20-Q28)
Q20Congenital malformations of cardiac chambers and connections
Q21Congenital malformations of cardiac septa
Q22Congenital malformations of pulmonary and tricuspid valves
Q23Congenital malformations of aortic and mitral valves
Q24Other congenital malformations of heart
Q25Congenital malformations of great arteries
Q26Congenital malformations of great veins
Q27Other congenital malformations of peripheral vascular system
Q28Other congenital malformations of circulatory system
Applicable Ancestor Context
The following parent sections contain instructions or notes that apply to Q20-Q28:
chapterCH17
Congenital malformations, deformations and chromosomal abnormalities (Q00-QA0)
View context instructionsMS-DRG Classification
No direct MS-DRG triggers identified.
Cross Reference
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