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ICD-10/Q24.5

Q24.5 ICD-10-CM Code: Malformation of coronary vessels

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0 (FY2026), Appendix B.

  • MS-DRG 306 — CARDIAC CONGENITAL AND VALVULAR DISORDERS WITH MCC (MDC 05)
  • MS-DRG 307 — CARDIAC CONGENITAL AND VALVULAR DISORDERS WITHOUT MCC (MDC 05)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Code Set: Valid FY2026 and FY2027. FY2026 took effect October 1, 2025.

Official Registry Overview & Definition

Malformation of coronary vessels is a billable ICD-10-CM diagnosis code (Q24.5).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Q24.5 in the official ICD-10-CM tabular list.

Inclusion Terms

Alternative terms the tabular list files under this code.

  • Congenital coronary (artery) aneurysm

Excludes1 — Not Coded Here

Conditions that can never be reported with this code; the two are mutually exclusive.

  • endocardial fibroelastosis (I42.4)

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Q24.5 in its code family, with their registry titles.

  • Q24 — Other congenital malformations of heart
  • Q24.0 — Dextrocardia
  • Q24.1 — Levocardia
  • Q24.2 — Cor triatriatum
  • Q24.3 — Pulmonary infundibular stenosis
  • Q24.4 — Congenital subaortic stenosis
  • Q24.6 — Congenital heart block
  • Q24.8 — Other specified congenital malformations of heart
  • Q24.9 — Congenital malformation of heart, unspecified

View all codes in the Q24 family

Indexed Clinical Terms (34)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • Aberrant (congenital), artery (peripheral), coronary
  • Abnormal, abnormality, abnormalities, coronary artery
  • Absence (of) (organ or part) (complete or partial), artery (congenital) (peripheral), coronary
  • Accessory (congenital), blood vessels NEC, coronary
  • Accessory (congenital), coronary artery
  • Agenesis, artery (peripheral), coronary
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular), congenital (peripheral), coronary
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular), coronary (arteriosclerotic) (artery), arteriovenous, congenital
  • Aneurysm (anastomotic) (artery) (cirsoid) (diffuse) (false) (fusiform) (multiple) (saccular), coronary (arteriosclerotic) (artery), congenital
  • Anomaly, anomalous (congenital) (unspecified type), arteriovenous NEC, coronary
  • Anomaly, anomalous (congenital) (unspecified type), artery (peripheral), coronary
  • Anomaly, anomalous (congenital) (unspecified type), communication, coronary artery
  • Anomaly, anomalous (congenital) (unspecified type), coronary artery or vein
  • Anomaly, anomalous (congenital) (unspecified type), distribution, coronary artery
  • Anomaly, anomalous (congenital) (unspecified type), valve NEC (heart), coronary sinus
  • Anomaly, anomalous (congenital) (unspecified type), valve NEC (heart), sinus coronario
  • Anomaly, anomalous (congenital) (unspecified type), vein (s) (peripheral), coronary
  • Atresia, atretic, artery NEC, coronary
  • Bridge, myocardial
  • Deformity, artery NOS (congenital) (peripheral), coronary (acquired), congenital
  • Deformity, coronary artery (acquired), congenital
  • Disease, diseased, coronary (artery), congenital
  • Distortion (s) (congenital), coronary
  • Distribution vessel, atypical, coronary artery
  • Fistula (cutaneous), arteriovenous (acquired) (nonruptured), congenital (peripheral), coronary
  • Fistula (cutaneous), arteriovenous (acquired) (nonruptured), coronary, congenital
  • Fistula (cutaneous), coronary, arteriovenous, congenital
  • Hypoplasia, hypoplastic, artery (peripheral), coronary
  • Malformation (congenital), coronary vessels
  • Malposition, congenital, artery (peripheral), coronary
  • Narrowing, artery, coronary, congenital
  • Single, coronary artery
  • Stricture, artery, congenital (peripheral), coronary
  • Stricture, artery, coronary, congenital