DxCodebookFY2027 · Oct 1, 2026 – Sep 30, 2027

Category · FY2027

Q34 Other congenital malformations of respiratory system

  • Header · not billable

Q34 is not billable. The category heads 4 billable codes in FY2027: the 4 codes directly below it.

Index → code

  • Atresia, atreticnasopharynx → Q34.8
  • Agenesisrespiratory organ NEC → Q34.8
  • Union, abnormallarynx and trachea → Q34.8

Where it sits

  1. Chapter 17 Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
  2. Q30-Q34 Congenital malformations of the respiratory system (Q30-Q34)
  3. Q34 Other congenital malformations of respiratory system
Billable codes
4
Subdivisions
4
CC / MCC codes
0 / 0
HCC V28 codes
0
New FY2027
0
Index entries
21

Codes in Q34

  1. Q34.0
    Anomaly of pleura
    BillableExempt
  2. Q34.1
    Congenital cyst of mediastinum
    BillableExempt
  3. Q34.8
    Other specified congenital malformations of respiratory system
    BillableExempt
    Inclusion terms 1

    Inclusion terms

    • Atresia of nasopharynx
  4. Q34.9
    Congenital malformation of respiratory system, unspecified
    BillableExempt
    Inclusion terms 2

    Inclusion terms

    • Congenital absence of respiratory system
    • Congenital anomaly of respiratory system NOS

Sources of each column.

Instructions

At Q34

Excludes2

  • congenital central alveolar hypoventilation syndrome (G47.35) G47.35

Notes that also apply

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

Index entries

  • Abnormal, abnormality, abnormalitiespleural (folds) → Q34.0
  • Anomaly, anomalous (congenital) (unspecified type)pleural (folds) → Q34.0
  • Cyst (colloid) (mucous) (simple) (retention)mediastinum, congenital → Q34.1
  • Agenesisrespiratory organ NEC → Q34.8
  • Atresia, atreticnasopharynx → Q34.8
  • Duplication, duplexrespiratory organs NEC → Q34.8
  • Fistula (cutaneous)laryngotracheal, congenital → Q34.8
  • Fusion, fused (congenital)larynx and trachea → Q34.8
  • Hypoplasia, hypoplasticrespiratory system NEC → Q34.8
  • Obstruction, obstructed, obstructiveupper respiratory, congenital → Q34.8
  • Union, abnormallarynx and trachea → Q34.8
  • Absence (of) (organ or part) (complete or partial)respiratory organ NOS → Q34.9
  • Anomaly, anomalous (congenital) (unspecified type)respiratory system → Q34.9
  • Defect, defectiverespiratory system, congenital → Q34.9
  • Deformityrespiratory system (congenital) → Q34.9
  • Malformation (congenital)respiratory system → Q34.9
  • Cyst (colloid) (mucous) (simple) (retention)congenital NECmediastinum → Q34.1
  • Anomaly, anomalous (congenital) (unspecified type)respiratory systemspecified NEC → Q34.8
  • Communicationbetweenpericardial sac and pleural sac → Q34.8
  • Malpositioncongenitalrespiratory organ or system NEC → Q34.8
  • Developmentincompleterespiratory system → Q34.9

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

Hierarchy