2026 ICD-10-CM Diagnosis Code Q32.4Other congenital malformations of bronchus
ICD-10-CM Codes›Q00-Q99›Q30-Q34›Q32
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- POA Exempt
- Chronic Condition
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 11 through 13, 154 through 156. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 18 closely related codes. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Respiratory congenital malformations.
Code Identity
Code Classification
Present on Admission (POA)Billing
Q32.4 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review the other POA exempt codes in Congenital malformations of the respiratory system (Q30-Q34).
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
These terms are the conditions for which that code is to be used. The terms may be synonyms of the code title, or, in the case of "other specified" codes, the terms are a list of the various conditions assigned to that code. The inclusion terms are not necessarily exhaustive. Additional terms found only in the Alphabetic Index may also be assigned to a code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
bronchus Q32.4
Blind See Also: Blindness;
bronchus (congenital) Q32.4
Malformation (congenital) See Also: Anomaly;
bronchus Q32.4
bronchus Q32.4
Mounier-Kuhn syndrome Q32.4
Rudimentary (congenital) See Also: Agenesis;
tracheal bronchus Q32.4
Syndrome See Also: Disease;
Mounier-Kuhn Q32.4
Tracheobronchomegaly Q32.4
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
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.
Code HistoryHistory
Questions About Q32.4Overview
What is the ICD-10 code for other congenital malformations of bronchus?
The ICD-10-CM code for other congenital malformations of bronchus is Q32.4 (sometimes written as Q324). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
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 11, 12, 13, 154, 155, 156, with relative weights from 0.6911 to 5.4541 depending on complications. Higher weights mean higher Medicare reimbursement.
Is Q32.4 a CC or MCC?
CMS lists Q32.4 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 18 closely related codes in its exclusion list.
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. The code appears in the Congenital malformations of the respiratory system (Q30-Q34) range of the CMS exempt list.
