Q34.9 – Congenital malformation of respiratory system, unspecified

ICD-10-CM 2027 diagnosis code · Congenital malformations of the respiratory system

Billable code

ICD-10-CM code Q34.9

Code: Q34.9 (claims format: Q349)
Description: Congenital malformation of respiratory system, unspecified
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 17. Congenital malformations, deformations, chromosomal abnormalities, and genetic disorders (Q00-QA1)
Block: Q30-Q34 Congenital malformations of the respiratory system
Parent codes: Q34

Notes for Q34.9

Applicable to:

Congenital absence of respiratory system
Congenital anomaly of respiratory system NOS

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Q34 – Other congenital malformations of respiratory system

Excludes2 (not included here):

congenital central alveolar hypoventilation syndrome (G47.35)

Index terms for Q34.9

Entries in the ICD-10-CM alphabetic index that lead to this code:

Related codes in Q34

Q34.0 – Anomaly of pleuraBillable
Q34.1 – Congenital cyst of mediastinumBillable
Q34.8 – Other specified congenital malformations of respiratory systemBillable

Frequently asked questions

What is ICD-10 code Q34.9?

Q34.9 is the ICD-10-CM code for congenital malformation of respiratory system, unspecified, in the block Q30-Q34 (Congenital malformations of the respiratory system).

Is Q34.9 a billable code?

Yes. Q34.9 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does Q34.9 belong to?

It belongs to category Q34 – Other congenital malformations of respiratory system.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.