J43.0 – Unilateral pulmonary emphysema [MacLeod's syndrome]

ICD-10-CM 2027 diagnosis code · Chronic lower respiratory diseases

Billable code

ICD-10-CM code J43.0

Code: J43.0 (claims format: J430)
Description: Unilateral pulmonary emphysema [MacLeod's syndrome]
Billable: Yes – valid for HIPAA-covered transactions
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 10. Diseases of the respiratory system (J00-J99)
Block: J40-J4B Chronic lower respiratory diseases
Parent codes: J43

Notes for J43.0

Applicable to:

Swyer-James syndrome
Unilateral emphysema
Unilateral hyperlucent lung
Unilateral pulmonary artery functional hypoplasia
Unilateral transparency of lung

Notes inherited from parent codes

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

J43 – Emphysema

Excludes1 (not coded here):

compensatory emphysema (J98.3)
interstitial emphysema (J98.2)
mediastinal emphysema (J98.2)
neonatal interstitial emphysema (P25.0)
surgical (subcutaneous) emphysema (T81.82)

Excludes2 (not included here):

emphysema due to inhalation of chemicals, gases, fumes or vapors (J68.4)
emphysema with chronic (obstructive) bronchitis (J44.-)
emphysematous (obstructive) bronchitis (J44.-)
traumatic subcutaneous emphysema (T79.7)

Block J40-J4B

Excludes1 (not coded here):

bronchitis due to chemicals, gases, fumes and vapors (J68.0)

Excludes2 (not included here):

cystic fibrosis (E84.-)

Index terms for J43.0

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

Related codes in J43

Frequently asked questions

What is ICD-10 code J43.0?

J43.0 is the ICD-10-CM code for unilateral pulmonary emphysema [MacLeod's syndrome], in the block J40-J4B (Chronic lower respiratory diseases).

Is J43.0 a billable code?

Yes. J43.0 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does J43.0 belong to?

It belongs to category J43 – Emphysema.

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.