Current

N20 — Calculus of kidney and ureter

Part of Chapter 14: Diseases of the genitourinary system , block Urolithiasis (N20-N23) .

Official Notes

Inclusion Terms

Calculous pyelonephritis

Excludes1

nephrocalcinosis ( E83.59 )

Excludes1

that with hydronephrosis ( N13.2 )

Child Codes

Referenced By

Official notes on these codes cite N20.

N13 Obstructive and reflux uropathy

FY 2027 effective October 1, 2026 · CDC NCHS and CMS