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N13.4

Billable

Hydroureter

This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).

What This Code Means

Swelling of the ureter (the tube carrying urine from kidney to bladder) due to urine backup, typically from an obstruction below the ureter.

Coding Tips

  • •Distinguish between hydroureter alone and hydroureter with hydronephrosis, which would require additional coding
  • •Document whether the condition is unilateral or bilateral

Excludes 1 — Do NOT code together

  • congenital hydroureter (Q62.3-)
  • hydroureter with infection (N13.6)
  • vesicoureteral-reflux with hydroureter (N13.73-)

Code Hierarchy

└N13Obstructive and reflux uropathy└N13.4Hydroureter
└N13.4Hydroureter

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