Table 3.

Charts That Failed to Meet Pneumonia Definition by Both of 2 Coders When Recoded by Different Coding Scheme.

Recoded diagnoses not meeting pneumonia definition	ICD-9-CM to ICD-10-CM	ICD-10-CM to ICD-9-CM
Age <5 years	n = 3 of 150	n = 2 of 150
Bronchiolitis	1
Interstitial pulmonary disease	1
Lung abscess	1
Asthma		1
Malignancy		1
Age >65 years	n = 41 of 350	n = 32 of 350
Chronic obstructive pulmonary disease with acute exacerbation	29	1
Sepsis or acute respiratory failure with no secondary diagnosis of pneumonia	5	7
Pneumonitis, interstitial lung disease, bronchiectasis, other pulmonary condition	5	6
Heart failure	1	4
Pulmonary embolism	1
Myocardial infarction		3
Other infection or transplant complication		7
Cancer or abdominal condition with secondary pneumonia		4