2026 ICD-10-CM Diagnosis Code Q32.4Other congenital malformations of bronchus

ICD-10-CM Codes›Q00-Q99›Q30-Q34›Q32

ICD-10-CM Q32.4
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Q32.4 is a billable ICD-10-CM diagnosis code for other congenital malformations of bronchus. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 154 through 156. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory congenital malformations.

Code Identity

ICD-10-CM Code
Q32.4
Billable Status
Yes — Valid for Submission
Code Describes
Other congenital malformations of bronchus
Short Description
Other congenital malformations of bronchus
Same as the full description in the CMS dataset.
Parent Code
Q32
Congenital malformations of trachea and bronchus

Code Classification

ChapterQ00-Q99Congenital malformations, deformations and chromosomal abnormalities
SectionQ30-Q34Congenital malformations of the respiratory system
CategoryQ32Congenital malformations of trachea and bronchus
This CodeQ32.4Other congenital malformations of bronchus

Present on Admission (POA)Billing

Q32.4 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Absence of larynx
  • Accessory bronchus
  • Accessory structure of lower respiratory tract
  • Agenesis of bronchus
  • Agenesis of larynx
  • Agenesis of larynx, trachea and bronchus
  • Agenesis of trachea
  • Bridging bronchus
  • Bronchial atresia with segmental pulmonary emphysema
  • Bronchial diverticulum
  • Bronchobiliary fistula
  • Bronchocele
  • Congenital absence of bronchus
  • Congenital absence of trachea
  • Congenital anomalous tracheobronchial branching
  • Congenital anomaly of bronchus
  • Congenital atresia of bronchus
  • Congenital bronchobiliary fistula
  • Congenital bronchocele
  • Congenital diverticulum of bronchus
  • Congenital dysplasia of bronchus
  • Congenital emphysema
  • Congenital lobar emphysema
  • Congenital malformation of larynx and trachea
  • Congenital malformation of trachea and bronchus
  • Congenital respiratory biliary fistula
  • Congenital tracheobronchomegaly
  • Deformity of bronchial cartilage
  • Fistula of bile duct
  • Left bronchial isomerism
  • Mirror image bronchial anatomy
  • Right bronchial isomerism
  • Rudimentary tracheal bronchus
  • Tracheal origin of right upper lobe bronchus

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Absence of bronchus
  • Agenesis of bronchus
  • Atresia of bronchus
  • Congenital diverticulum of bronchus
  • Congenital malformation of bronchus NOS

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Absence(of) (organ or part) (complete or partial)
      • bronchus (congenital)
    • Agenesis
      • bronchus
    • Anomaly, anomalous(congenital) (unspecified type)
      • bronchus
    • Aplasia
      • bronchus
    • Atresia, atretic
      • bronchus
    • Blind
      • bronchus (congenital)
    • Deformity
      • bronchus (congenital)
    • Development
      • incomplete
        • bronchial tree
    • Diverticulum, diverticula(multiple)
      • bronchus (congenital)
    • Hypoplasia, hypoplastic
      • bronchus
    • Malformation(congenital)
      • bronchus
    • Malposition
      • congenital
        • bronchus
    • Mounier-Kuhn syndrome
    • Pouch
      • bronchus
    • Rudimentary(congenital)
      • tracheal bronchus
    • Syndrome
      • Mounier-Kuhn
    • Tracheobronchomegaly

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR MAL007
Respiratory congenital malformations
Default principal diagnosis: inpatient Yes · outpatient Yes

Clinical InformationClinical

  • Congenital Lobar Emphysema

    a rare abnormality in the lungs that is present at birth. it is characterized by hyperinflation of one or more lobes of the lungs. signs and symptoms appear early in life and include dyspnea, wheezing, and cyanosis.

Patient EducationClinical

Birth Defects

A birth defect is a problem that happens while a baby is developing in the mother's body. Most birth defects happen during the first 3 months of pregnancy. One out of every 33 babies in the United States is born with a birth defect.

The full article covers:

  • What are birth defects?
  • What causes birth defects?
  • Who is at risk of having a baby with birth defects?
  • How are birth defects diagnosed?
  • What are the treatments for birth defects?
  • Can birth defects be prevented?

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Q32.4 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
748.3 Laryngotrach anomaly NEC
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Q32.4Overview

Is Q32.4 (Congenital malformations of trachea and bronchus) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other congenital malformations of bronchus on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does Q32.4 group to?

When other congenital malformations of bronchus is the principal diagnosis on an inpatient stay, it groups to MS-DRG 154, 155, 156, with relative weights from 0.6911 to 1.5635 depending on complications. Higher weights mean higher Medicare reimbursement.

Is Q32.4 exempt from POA reporting?

Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other congenital malformations of bronchus on inpatient claims.

What is the ICD-9 equivalent of Q32.4?

Under the General Equivalence Mappings, other congenital malformations of bronchus converts to ICD-9-CM 748.3 (laryngotrach anomaly NEC). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Chronic - a chronic condition code indicates a condition lasting 12 months or longer and its effect on the patient based on one or both of the following criteria:

  • The condition results in the need for ongoing intervention with medical products,treatment, services, and special equipment
  • The condition places limitations on self-care, independent living, and social interactions.