AHA Coding Clinic® for ICD-10-CM and ICD-10-PCS - 2016 Issue 4; ICD-10-CM NEW/REVISED CODES

Acquired Ureteropelvic Junction Obstruction

A new code N13.0, Hydronephrosis with ureteropelvic junction obstruction, has been created at category N13, Obstructive and reflux uropathy, to uniquely identify acquired obstruction of ureteropelvic junction (UPJ) when hydronephrosis is present. UPJ obstruction is described as an obstruction of the flow of urine from the renal pelvis to the proximal ureter. Congenital abnormalities may be observed in both adults and children as a result of infections, scarring, or a crossing vessel. UPJ obstruction may also be seen in adults following previous surgery or other disorders that can cause inflammation of the upper urinary tract. Hydronephrosis is characterized...

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