. 2023 Jun 20;131(6):067009. doi: 10.1289/EHP11120

Table 1.

International Classification of Disease (ICD) codes for heart defect.

	ICD-9 codes^a	ICD-10 codes^a
Critical heart defect
Tetralogy of Fallot	745.2 (47.81)	Q21.3 (1.HP.87, 1.LD.84)
Transposition of great vessels	745.1	Q20.1–Q20.3, Q20.50
Truncus arteriosus	745.0 (47.83)	Q20.0, Q21.4 (1.LA.84)
Hypoplastic left heart	746.7	Q23.4
Common ventricle	745.3	Q20.4
Coarctation of aorta	747.1	Q25.1
Other critical	746.01, 746.1, 746.2, 747.41	Q22.0, Q22.4, Q22.5, Q26.2
Noncritical heart defect
Endocardial cushion	745.6 (47.55, 47.64, 47.74)	Q21.2 (1.LC.84)
Ventricular septum	745.4 (47.54, 47.63, 47.73)	Q21.0, Q21.8 (1.HR.80)
Atrial septum	745.5 (47.52, 47.53, 47.62, 47.72)	Q21.1 (1.HN.80)
Valve	746.00, 746.02, 746.09, 746.3–746.6	Q22.1–Q22.3, Q22.8–Q23.3, Q23.8, Q23.9
Aorta	747.2	Q25.2–Q25.4
Pulmonary artery	747.3	Q25.5–Q25.7
Heterotaxy	746.87, 759.3	Q20.58, Q20.6, Q24.0, Q24.1, Q89.3
Other	Any defects in 745–746, 747.1–747.4 not listed above	Any defects in Q20–Q24.9, Q25.1–Q26.4, Q26.8, Q26.9 not listed above

Note: ICD-9, International Classification of Diseases, Ninth Revision²¹; ICD-10, .International Classification of Diseases, Tenth Revision.²²

^{^a}

Values in parentheses refer to procedure codes (Canadian Classification of Diagnostic, Therapeutic, and Surgical Procedures²³; Canadian Classification of Health Interventions²⁴).