ICD-10-CM 2027 diagnosis code
J43.2Centrilobular emphysema
J43.2 is a valid, billable ICD-10-CM code for centrilobular emphysema. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.
Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data
About J43.2
J43.2 is the ICD-10-CM diagnosis code for Centrilobular emphysema. It belongs to category J43 (emphysema), block J40-J4B (chronic lower respiratory diseases) and chapter 10 (diseases of the respiratory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.
Within J43 (emphysema), J43.2 is specifically for Centrilobular emphysema. Related codes cover unilateral pulmonary emphysema [MacLeod's syndrome] (J43.0), Panlobular emphysema (J43.1), other emphysema (J43.8) and unspecified (J43.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 190 (Chronic Obstructive Pulmonary Disease with MCC, relative weight 1.0748), DRG 191 (Chronic Obstructive Pulmonary Disease with CC, relative weight 0.8261) and DRG 192 (Chronic Obstructive Pulmonary Disease without CC/MCC, relative weight 0.6288), in MDC 04 (Diseases and Disorders of the Respiratory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.
Before ICD-10, this condition was coded in ICD-9-CM as 492.8 (other emphysema).
Notes that apply from higher levels
Instructions written at a parent level also apply to J43.2.
› From J43 Emphysema
Broader instructions also apply from J40-J4B Chronic lower respiratory diseases and Chapter 10: Diseases of the respiratory system.
Alphabetic index entries
1 entriesTerms in the official ICD-10-CM index that lead to J43.2.
MS-DRG v44.0 grouping
All DRGs →Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.
MDC 04 · Diseases and Disorders of the Respiratory System
ICD-9-CM equivalent
Converter →- 492.8Other emphysemaapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about J43.2
Is J43.2 billable?
- Yes. J43.2 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can J43.2 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict J43.2 as a principal diagnosis.
Is J43.2 a CC or MCC?
- No. J43.2 is neither a CC nor an MCC under MS-DRG v44.0.
What DRG does J43.2 group to?
- J43.2 is used in the MS-DRG v44.0 logic for MS-DRG 190 (Chronic Obstructive Pulmonary Disease with MCC), MS-DRG 191 (Chronic Obstructive Pulmonary Disease with CC) and MS-DRG 192 (Chronic Obstructive Pulmonary Disease without CC/MCC). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.
What is the ICD-9 code for J43.2?
- The CMS General Equivalence Mappings map J43.2 to ICD-9-CM 492.8.