This month’s “In the kNOW” article will address
the coding of COPD. Chronic obstructive
pulmonary disease is a condition that affects the lungs. It may be chronic bronchitis or emphysema. Chronic bronchitis causes the airways to narrow
due to inflammation, while emphysema impacts the alveolar sacs in the lungs by
trapping air and compromising the ability to exhale completely. This causes the reduction of oxygen available
to circulate throughout the body.
In ICD-10-CM coding of COPD is based on
the complete diagnostic statement. If
the only condition documented is COPD, the proper code assignment is
J44.9. If the physician documents COPD
and emphysema, then the coding professional should assign J43.9. The rationale for this is explained in a 4th
Qtr. 2017 Coding Clinic, which states
that emphysema is a specific type of COPD.
Therefore, when both conditions are documented, code the more specific
diagnosis only, J43.9.
If COPD is documented along with a lower respiratory
infection, such as pneumonia or bronchitis, then the COPD is coded as
J44.0. Remember, this applies only to
COPD with a lower respiratory infection. So, if the patient has influenza, we would not
assign J44.0 since influenza is considered an upper and lower respiratory
infection. Additionally, do not assign
J44.0 if COPD is documented with aspiration pneumonia. That type of pneumonia is considered a lung
disease due to an external cause rather than a lower respiratory infection.
There are instances when COPD suddenly
becomes worse for a period of time. This
is called an acute exacerbation. When
COPD is in acute exacerbation, the appropriate code is J44.1. There may be instances when a patient is
suffering from both an acute exacerbation of COPD and a lower respiratory
infection. In those circumstances,
assign both J44.0 and J44.1 along with the code specifying the lower
respiratory infection (ie. acute bronchitis).
When asthma is present in a patient with
COPD, assign only code J44.9. This is
true unless the patient’s asthma is specified by type such as mild persistent
asthma, in which case assign both the COPD code (J44.9) and the specific asthma
code (J45.30). If the patient’s asthma
is stated as being in acute exacerbation, coding professionals may assign both
J44.9 and J45.901. The 4th
Qtr. 2017 Coding Clinic indicated the
appropriateness of this code assignment by stating that the diagnosis of acute
exacerbation of asthma not further qualified is, in itself, a specific type of
asthma. Therefore, the code assignment
of J45.901 along with J44.9 is acceptable.
Now you are In the kNOW!!
About the Author
She recently served as the program director for Medical Coding and HIT at Eastern Gateway Community College. Dianna earned her bachelor's degree from the University of Cincinnati subsequently achieving her RHIA, CHPS, and CCS certifications. She is an AHIMA Approved ICD-10-CM/PCS Trainer and a a presenter at regional HIM meetings and the OHIMA Annual Meeting.