Q33.9 ICD-10-CA code: Congenital malformation of lung, unspecified
Q33.9 is the ICD-10-CA code for “Congenital malformation of lung, unspecified” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
Q33.9Congenital malformation of lung, unspecified
Short description: Congenital malformation of lung NOS
ICD-10-CA · Canada · Also written Q339
Index terms
Entries in CIHI’s alphabetical index that lead to Q33.9. Searching the index by the condition the note names is how coders reach this code.
- Deformity, lung (congenital)
- Malformation (congenital), lung
- Anomaly, anomalous (congenital) (unspecified type), pulmonary
- Anomaly, anomalous (congenital) (unspecified type), lung (fissure) (lobe)
Notes for Q33.9
As CIHI prints them, with any note Q33.9 takes from the headings above it.
Excludes
Conditions classified elsewhere.
- Inborn errors of metabolism (E70-E90)From Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
Where Q33.9 sits
- 1ChapterChapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- 2Block Q30-Q34Congenital malformations of the respiratory system
- 3Category Q33Congenital malformations of lung
- 4Valid code Q33.9Congenital malformation of lung, unspecified
Source and release
- Data release
- ICD-10-CA · FY 2026–2027
- Effective date
- Apr 1, 2026
- Publisher
- CIHI
This page is built from the ICD-10-CA catalog that Vero Codes reads when it suggests codes: Canadian Institute for Health Information’s FY 2026–2027 release, imported from the publisher’s file and checked against it. The description, notes and structured data come from the same record.
Frequently asked questions
What does ICD-10-CA code Q33.9 mean?
Q33.9 is the ICD-10-CA code for “Congenital malformation of lung, unspecified” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is Q33.9 in ICD-10-CA?
Q33.9 sits under Q33 Congenital malformations of lung, within Q30-Q34 Congenital malformations of the respiratory system, within Chapter 17: Congenital malformations, deformations and chromosomal abnormalities (Q00-Q99).
What coding notes apply to Q33.9?
ICD-10-CA lists Excludes notes for Q33.9, including those from the headings it sits under. They are listed on this page with where each one comes from.
Which ICD-10-CA release does this page use?
It uses CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026 to Mar 31, 2027. It is a reference: confirm the code against the current list and the payer’s rules before you submit it.