AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2019 Issue 3; Ask the Editor
Kidney Stone and Pyelonephritis
A patient who has a history of kidney stones and appendectomy presents to the emergency department due to left lower quadrant pain. A computed tomography (CT) scan was performed which revealed pyelonephritis and bilateral nonobstructive renal calculi. When referencing the main term “pyelonephritis” in the Alphabetic Index, there is a subentry for “with calculus” that directs to code N20.0, Calculus of kidney. However, the patient was admitted because of the pyelonephritis, not kidney stones. The focus of treatment was for the infection, and minimal resources were used for the stone. What is the appropriate code assignment for this patient? ...
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Article Overview
This article explains a kidney-related coding scenario in emergency care and addresses how the presence of renal calculi interacts with the documented infection diagnosis in ICD-10-CM indexing. It is useful for coders, CDI staff, auditors, and clinicians who need to interpret code assignment in a case involving urinary tract findings and imaging results.
Why This Topic Matters
Accurate diagnosis coding affects record abstraction, quality reporting, and claims consistency when more than one condition appears in the same encounter.
What You Will Learn
- How the article frames a kidney infection case with concurrent renal stones
- How the topic is discussed in relation to ICD-10-CM indexing
- Why encounter context matters when reviewing documentation for code assignment
- How emergency department documentation may be interpreted for coding purposes
Who Should Read This
- Medical coders
- Coding auditors
- Clinical documentation improvement specialists
- Healthcare billers
- Clinicians
Codes Discussed
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