Block · Chapter 17

Q20-Q28 Congenital malformations of the circulatory system (Q20-Q28)

Block Q20-Q28 groups 9 categories with 102 billable codes in FY2027.

Where it sits

Neighbouring blocks

Categories in Q20-Q28

Q20
Congenital malformations of cardiac chambers and connections
Unilocular heart → Q20.8
- 9 billable codes
- 1 CC
- 5 MCC
Q21
Congenital malformations of cardiac septa
Acleistocardia → Q21.19
- 17 billable codes
- 13 CC
- 1 MCC
Q22
Congenital malformations of pulmonary and tricuspid valves
Ebstein's anomaly or syndrome (heart) → Q22.5
- 9 billable codes
- 3 CC
- 6 MCC
Q23
Congenital malformations of aortic and mitral valves
Parachute mitral valve → Q23.2
- 9 billable codes
- 4 CC
- 1 MCC
Q24
Other congenital malformations of heart
Ectocardia → Q24.8
- 9 billable codes
- 4 CC
- 3 MCC
Q25
Congenital malformations of great arteries
Right aortic arch → Q25.47
- 22 billable codes
- 17 CC
- 5 MCC
Q26
Congenital malformations of great veins
Scimitar syndrome → Q26.8
- 9 billable codes
- 7 CC
Q27
Other congenital malformations of peripheral vascular system
Distribution vessel, atypical → Q27.9
- 12 billable codes
- 2 CC
Q28
Other congenital malformations of circulatory system
Pseudoarteriosus → Q28.8
- 6 billable codes
- 4 CC
- 2 MCC

Anomaly, anomalous (congenital) (unspecified type) → Q20, Q21, Q22, Q23, Q24, Q25, Q26, Q27, Q28 (148 entries)
Malformation (congenital) → Q20, Q21, Q22, Q23, Q24, Q25, Q26, Q27, Q28 (63 entries)
Defect, defective → Q20, Q21, Q27, Q28 (50 entries)
Atresia, atretic → Q22, Q23, Q24, Q25, Q26, Q27, Q28 (40 entries)
Hypoplasia, hypoplastic → Q22, Q23, Q24, Q25, Q26, Q27, Q28 (37 entries)
Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular) → Q24, Q25, Q27, Q28 (35 entries)
Absence (of) (organ or part) (complete or partial) → Q20, Q21, Q22, Q24, Q25, Q26, Q27, Q28 (29 entries)
Imperfect → Q21, Q22, Q24, Q25 (26 entries)
Stenosis, stenotic (cicatricial) → Q21, Q22, Q23, Q24, Q25, Q26, Q27 (26 entries)
Stricture → Q22, Q23, Q24, Q25, Q26, Q27, Q28 (26 entries)
Deformity → Q21, Q22, Q23, Q24, Q25, Q26, Q27, Q28 (24 entries)
Aberrant (congenital) → Q24, Q25, Q27, Q28 (21 entries)
Agenesis → Q20, Q21, Q22, Q24, Q25, Q26, Q27, Q28 (21 entries)
Malposition → Q20, Q24, Q25, Q26, Q27 (16 entries)
Persistence, persistent (congenital) → Q20, Q21, Q25, Q26 (16 entries)

+117 more main terms; the search box finds them by word.

Chapter 17 instructions (Notes 1, Excludes2 1): printed on the chapter 17 page.