What does ICD-10 code J43 mean?

ICD-10 code J43 is the standardized code used for emphysema in medical records and coding systems.

When is ICD-10 code J43 used?

Doctors, hospitals, and insurers may use ICD-10 code J43 when recording emphysema in a standardized format. This entry may also act as a broader category that points toward more specific child codes.

Does ICD-10 code J43 confirm a diagnosis?

No. A code helps standardize documentation and claims, but it should not be read as a substitute for a clinician's full assessment.

ICD10

ICD-10 Code J43: Emphysema

Name: ICD-10 Code J43: Emphysema
Creator: HealthAssure Clinical Team
Published: 2026-05-21T06:14:44.846Z

J43 is an ICD-10 diagnosis entry used to group records related to Emphysema. You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen. ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the respiratory system (J00-J99).

Reviewed by HealthAssure Clinical TeamUpdated 21 May 2026

What is this code?

ICD-10 entries help standardize how diagnoses are organized for coding, reporting, analytics, and documentation. This code sits within the broader ICD-10 area for Diseases of the respiratory system (J00-J99).

When is it used?

May be used when a clinician documents emphysema in a patient's medical record.
May appear in hospital records, claims, referrals, and clinical documentation.
This code may act more like a grouping or parent code, so a more specific child code may be used in final documentation when available.

What it does not mean

A code alone does not explain severity, treatment plan, or outcome.
A medical code should not be treated as a substitute for a doctor's diagnosis or advice.
This entry may represent a broader category rather than the most specific billable code.

Code hierarchy

chapter

10Diseases of the respiratory system (J00-J99)

block

J40-J4AChronic lower respiratory diseases

currentJ40-J4A

Official coding notes

Excludes1 (do not code together)

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

Excludes2 (may code together if documented)

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)

Where you may see this code

You may see this entry in coding references, medical records, or claims workflows when a broader diagnosis category is being reviewed before a more specific code is chosen.

Related specialists

PulmonologistGeneral Physician

Sibling codes

J40Bronchitis, not specified as acute or chronicbillable J41Simple and mucopurulent chronic bronchitis J42Unspecified chronic bronchitisbillable J44Other chronic obstructive pulmonary disease J4AChronic lung allograft dysfunction J45Asthma J47Bronchiectasis

Coding guidelines

Compatibility

Legacy code aligns to an official FY 2026 category. Frontend should resolve to the official category page and surface the billable child codes.

Legacy codes

J43

Replacement codes

J43.0 — Unilateral pulmonary emphysema [MacLeod's syndrome]J43.1 — Panlobular emphysemaJ43.2 — Centrilobular emphysemaJ43.8 — Other emphysemaJ43.9 — Emphysema, unspecified

Common synonyms

Emphysema

Frequently asked questions

About this content

This page is prepared by HealthAssure's clinical team using official coding standards from ICD-10. AI tools assist with drafting explanations, which are then reviewed and verified by healthcare professionals for accuracy. This content is for informational purposes and does not replace professional medical advice. Meet our team.