Knowledge Base Article

Q:

What is the code assignment for a patient with a history of emphysema presenting to the hospital with COPD exacerbation? 

A:

Emphysema, unspecified (J43.9) should be assigned for a patient that has COPD exacerbation with emphysema, as long as the patient does not have chronic bronchitis.  There is an Excludes1 note, found in the alphabetic index under category J44, that excludes coding J44.1 with code J43.9.

J44  Other chronic obstructive pulmonary disease

        Excludes1:  emphysema without chronic bronchitis (J43.-)

There was some confusion of how to capture the acuity for COPD after Coding Clinic, Fourth Quarter, 2017 published the above information; however, advice in Coding Clinic, First Quarter 2019, further clarifies coding emphysema (J43.9) only when a present also has acute exacerbation of COPD.

The Centers for Disease Control and Prevention (CDC)/7National Center for Health Statistics (NCHS), the organization responsible for revisions to ICD-10-CM, is aware of this issue and has agreed to consider a Coordination and Maintenance proposal for possible revisions to the instructional note..

Resources:

ICD-10-CM Official Guidelines for Coding and Reporting

Coding Clinic, Fourth Quarter, 2017

Coding Clinic, First Quarter 2019