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N20

Non-billable

Calculus of kidney and ureter

N20 is the ICD-10-CM code for Calculus of kidney and ureter. It is a non-billable category code — use a more specific child code such as N20.0 for billing.

Status
Header (non-billable)
Chapter
N00-N99
Subcodes
4
Edition
FY2026

N00-N99 Diseases of the genitourinary system

Includes

  • •Calculous pyelonephritis

Excludes1 — not coded here

  • •nephrocalcinosis (E83.59)
  • •that with hydronephrosis (N13.2)

Frequently asked questions

What is ICD-10 code N20?
N20 is the ICD-10-CM code for "Calculus of kidney and ureter". It falls under N00-N99 Diseases of the genitourinary system.
Is N20 a billable code?
No — N20 is a non-billable header code. Use a more specific child code (such as N20.0) for billing.
What are the subcodes of N20?
N20 has 4 more specific child codes, including N20.0, N20.1, N20.2.
What is excluded from N20?
Excludes1 (not coded here): nephrocalcinosis (E83.59); that with hydronephrosis (N13.2).

Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.

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