Postprocedural (acute) (chronic) kidney failure

This code signifies a decline in kidney function, either sudden or gradual, that occurs as a direct consequence of a medical or surgical procedure. It encompasses both acute kidney injury (AKI) and chronic kidney disease (CKD) that develops or worsens post-intervention.

Apply this code when documentation explicitly links kidney failure to a preceding procedure, such as surgery, angiography with contrast, or medication administration. The medical record must clearly state the temporal relationship and causal connection between the procedure and the onset or exacerbation of renal dysfunction.

• Always sequence this code after the code for the underlying procedure or condition that led to the kidney failure.
• Specify the type of kidney failure (acute or chronic) if documented, using a more specific code if available (e.g., N17.- for acute, N18.- for chronic).
• Do not use this code for kidney failure due to unrelated medical conditions or pre-existing CKD that is not exacerbated by a procedure.