J43.0 ICD-10-CA code: MacLeod's syndrome
J43.0 is the ICD-10-CA code for “MacLeod's syndrome” in CIHI’s FY 2026–2027 release, in effect from Apr 1, 2026.
Official description
J43.0MacLeod's syndrome
ICD-10-CA · Canada · Also written J430
Index terms
Entries in CIHI’s alphabetical index that lead to J43.0. Searching the index by the condition the note names is how coders reach this code.
- Transparency, lung, unilateral
- Emphysema (atrophic) (chronic) (interlobular) (lung) (obstructive) (pulmonary) (senile), unilateral
Notes for J43.0
As CIHI prints them, with any note J43.0 takes from the headings above it.
Includes
- Unilateral:• emphysema• transparency of lung
Excludes
Conditions classified elsewhere.
- Emphysema:• compensatory (J98.3)• due to inhalation of chemicals, gases, fumes or vapours (J68.4)• interstitial (J98.2)• neonatal (P25.0)• mediastinal (J98.2)• surgical (subcutaneous) (T81.81)• traumatic subcutaneous (T79.7)• with chronic (obstructive) bronchitis (J44.-)emphysematous (obstructive) bronchitis (J44.-)From J43 Emphysema
- Cystic fibrosis (E84.-)respiratory infection NOS (J98.7)From J40-J47 Chronic lower respiratory diseases
- Certain:• conditions originating in the perinatal period (P00-P96)• infectious and parasitic diseases (A00-B99)complications of pregnancy, childbirth and the puerperium (O00-O99)congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)endocrine, nutritional and metabolic diseases (E00-E90)injury, poisoning and certain other consequences of external causes (S00-T98)neoplasms (C00-D48)symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R99)From Chapter 10: Diseases of the respiratory system (J00-J99)
Note
- When a respiratory condition is described as occurring in more than one site and is not specifically indexed, it should be classified to the lower anatomic site (e.g., tracheobronchitis to bronchitis in J40).From Chapter 10: Diseases of the respiratory system (J00-J99)
Where J43.0 sits
- 1ChapterChapter 10: Diseases of the respiratory system (J00-J99)
- 2Block J40-J47Chronic lower respiratory diseases
- 3Category J43Emphysema
- 4Valid code J43.0MacLeod's syndrome
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 J43.0 mean?
J43.0 is the ICD-10-CA code for “MacLeod's syndrome” in CIHI’s ICD-10-CA FY 2026–2027 release.
Where is J43.0 in ICD-10-CA?
J43.0 sits under J43 Emphysema, within J40-J47 Chronic lower respiratory diseases, within Chapter 10: Diseases of the respiratory system (J00-J99).
What coding notes apply to J43.0?
ICD-10-CA lists Includes, Excludes, Note notes for J43.0, 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.