DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q24 Other congenital malformations of heart

  • Header · not billable

Q24 is not billable. The category heads 9 billable codes in FY2027: the 9 codes directly below it.

Index → code

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q20-Q28 Congenital malformations of the circulatory system (Q20-Q28)
  3. Q24 Other congenital malformations of heart
Billable codes
9
Subdivisions
9
CC / MCC codes
4 / 3
HCC V28 codes
0
New FY2027
0
Index entries
146

Codes in Q24

  1. Q24.0
    Dextrocardia
    BillableCCExempt
    Excludes1 3

    Excludes1

    • dextrocardia with situs inversus (Q89.3) Q89.3
    • isomerism of atrial appendages (with asplenia or polysplenia) (Q20.6) Q20.6
    • mirror-image atrial arrangement with situs inversus (Q89.3) Q89.3
  2. Q24.1
    Levocardia
    BillableCCExempt
  3. Q24.2
    Cor triatriatum
    BillableMCCExempt
  4. Q24.3
    Pulmonary infundibular stenosis
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Subvalvular pulmonic stenosis
  5. Q24.4
    Congenital subaortic stenosis
    BillableMCCExempt
  6. Q24.5
    Malformation of coronary vessels
    BillableCCExempt
    Inclusion terms 1

    Inclusion terms

    • Congenital coronary (artery) aneurysm
  7. Q24.6
    Congenital heart block
    BillableMCCExempt
  8. Q24.8
    Other specified congenital malformations of heart
    BillableExempt
    Inclusion terms 5

    Inclusion terms

    • Congenital diverticulum of left ventricle
    • Congenital malformation of myocardium
    • Congenital malformation of pericardium
    • Malposition of heart
    • Uhl's disease
  9. Q24.9
    Congenital malformation of heart, unspecified
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Congenital anomaly of heart
    • Congenital disease of heart

CC/MCC: as a secondary diagnosis, unless the principal diagnosis is on the code’s PDX exclusion list (MS-DRG v44 Appendix C; list on the code card).

Sources of each column.

Instructions

At Q24

Excludes1

  • endocardial fibroelastosis (I42.4) I42.4

Notes that also apply

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

Index entries

  • Dextrocardia (true) → Q24.0
  • Levocardia (isolated) → Q24.1
  • Bridge, myocardial → Q24.5
  • Cordis ectopia → Q24.8
  • Ectocardia → Q24.8
  • Hemicardia → Q24.8
  • Uhl's anomaly or disease → Q24.8
  • Acyanotic heart disease (congenital) → Q24.9
  • Atelocardia → Q24.9
  • Transposition (congenital)heart → Q24.0
  • Cortriatriatum, triatrium → Q24.2
  • Separationinfundibulum cardiac from right ventricle by a partition → Q24.3
  • Stenosis, stenotic (cicatricial)infundibulum cardia → Q24.3
  • Stenosis, stenotic (cicatricial)subaortic (congenital) → Q24.4
  • Stricturesubaortic → Q24.4
  • Abnormal, abnormality, abnormalitiescoronary artery → Q24.5
  • Accessory (congenital)coronary artery → Q24.5
  • Anomaly, anomalous (congenital) (unspecified type)coronary artery or vein → Q24.5
  • Anomaly, anomalous (congenital) (unspecified type)distribution, coronary artery → Q24.5
  • Distortion(s) (congenital)coronary → Q24.5
  • Distribution vessel, atypicalcoronary artery → Q24.5
  • Malformation (congenital)coronary vessels → Q24.5
  • Singlecoronary artery → Q24.5
  • Absence (of) (organ or part) (complete or partial)pericardium (congenital) → Q24.8
  • Accessory (congenital)cusp(s), heart valve NEC → Q24.8
  • Accessory (congenital)heart → Q24.8
  • Accessory (congenital)leaflet, heart valve NEC → Q24.8
  • Accessory (congenital)valve, heart NEC → Q24.8
  • Agenesisheart → Q24.8
  • Agenesispericardium → Q24.8
  • Anomaly, anomalous (congenital) (unspecified type)chordae tendineae → Q24.8
  • Anomaly, anomalous (congenital) (unspecified type)myocardium → Q24.8
  • Anomaly, anomalous (congenital) (unspecified type)papillary muscles → Q24.8
  • Anomaly, anomalous (congenital) (unspecified type)pericardium → Q24.8
  • Anomaly, anomalous (congenital) (unspecified type)Uhl's (hypoplasia of myocardium, right ventricle) → Q24.8
  • Anomaly, anomalous (congenital) (unspecified type)valve (heart) NEC → Q24.8
  • Atresia, atreticheart valve NEC → Q24.8
  • Bifid (congenital)apex, heart → Q24.8
  • Cardiomegalycongenital → Q24.8
  • Chiari'snet → Q24.8

106 more, longer entries are not listed; the search box finds them by word.

NCHS Alphabetic Index. Index first, then the Tabular List.

Hierarchy