A patient is admitted for pneumonia with a WBC of 20,000, respiratory rate 20, heart...

The most appropriate action in this case is to query the provider to document the etiology of pneumonia, which is pseudomonas bacteria. This is because the etiology of pneumonia affects the coding and classification of the condition, as well as the severity of illness, risk of mortality, and reimbursement. According to the ICD-10-CM Official Guidelines for Coding and Reporting, pneumonia should be coded by type whenever possible, and if the type of pneumonia is not documented, then the default code is J18.9, Pneumonia, unspecified organism 2. However, if the type of pneumonia is documented, then a more specific code can be assigned, such as J15.1, Pneumonia due to Pseudomonas 3. Therefore, querying the provider to document the etiology of pneumonia will improve the accuracy and completeness of the documentation and coding, and reflect the true clinical picture of the patient.

References: 1: AHIMA CDIP Exam Prep, Fourth Edition, p. 139 4 2: ICD-10-CM Official Guidelines for Coding and Reporting FY 2021, Section I.C.9.a 3: ICD-10-CM Code J15.1 - Pneumonia due to Pseudomonas