N20Header code — not billable

Calculus of kidney and ureter

Chapter
14. Diseases of the genitourinary system
Category
N20
Effective date
October 1, 2026

Related codes in category N20

N20.0Calculus of kidneyYesN20.1Calculus of ureterYesN20.2Calculus of kidney with calculus of ureterYesN20.9Urinary calculus, unspecifiedYes

Frequently asked questions

What is ICD-10 code N20?

N20 is an ICD-10-CM diagnosis code for Calculus of kidney and ureter.

Is N20 a billable code?

No. N20 is a category/header code, not billable on its own — use one of its more specific child codes instead.

What ICD-10-CM chapter is N20 in?

N20 falls under Chapter 14: Diseases of the genitourinary system.

When did N20 become effective?

N20 has been effective since October 1, 2026, per the CMS/CDC ICD-10-CM annual release.

What other codes are related to N20?

N20 belongs to category N20, which includes 4 other codes — see the related codes list on this page.

ICD-10-CM data maintained by CDC/CMS (public domain). Always verify codes with authoritative sources before making coding or billing decisions.