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N13.6

Billable

Pyonephrosis

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

What This Code Means

Infection and swelling of the kidney caused by urine backup, resulting in pus accumulation in the kidney.

Coding Tips

  • •This is a serious condition; ensure documentation clearly indicates infection (pyonephrosis) not just hydronephrosis
  • •Consider assigning an additional code for the causative organism if documented

Use Additional Code

  • code (B95-B97), to identify infectious agent.

Code Hierarchy

└N13Obstructive and reflux uropathy└N13.6Pyonephrosis
└N13.6Pyonephrosis

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