AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2026 Issue 1; Ask the Editor
North-South Syndrome (NSS)
A patient with acute and persistent hypoxic and hypercapnic respiratory failure required emergent extracorporeal membrane oxygenation (ECMO). The ECMO initially started with veno-venous (VV)-ECMO with subsequent conversion to veno-arterial (VA)-ECMO because of continued increased pressor requirements; however, this was later reconfigured to veno-arterio-venous (VAV)-ECMO given that the patient developed North-South syndrome (NSS). NSS is a complication of VA-ECMO where oxygenated blood reinfused from the ECMO circuit supports lower body circulation while upper body circulation fails to receive adequate oxygenated blood from the lungs. What is the correct ICD-10-CM code assignment for NSS? ...
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Article Overview
This article addresses a clinical coding question involving a complication that developed in the setting of extracorporeal membrane oxygenation (ECMO). It explains the scenario at a high level, identifies the ICD-10-CM code assignment discussed, and is relevant to coders and billing staff working with critical care and procedure-related complications.
Why This Topic Matters
Articles like this help coding professionals connect a complication documented in intensive care with the appropriate diagnosis coding framework. It is useful when reviewing ECMO-related records and procedure complication documentation.
What You Will Learn
- How the article frames a complication occurring in the context of ECMO.
- What broad coding topic the article is addressing.
- Which coding classification is being discussed for the diagnosis assignment.
- How the article positions the case for coding review in a critical care setting.
Who Should Read This
- Medical coders
- Coding auditors
- Inpatient billing staff
- Critical care documentation specialists
Codes Discussed
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