N20.9

N20.9: Urinary calculus, unspecified

Billable / specific codeICD-10-CM

N20.9 is a billable, specific ICD-10-CM code for urinary calculus, unspecified. It is valid for submission on a claim.

Check N20.9 with the rest of the claim: free scrubber

Excludes1 inherited from the categories above N20.9

A category’s note binds every code beneath it.

Written on N20: Calculus of kidney and ureter

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

Other codes that can never be billed with N20.9

Their own Excludes1 notes name this code, so the conflict is not listed above.

N11.1Chronic obstructive pyelonephritis
N12Tubulo-interstitial nephritis, not specified as acute or chronic
N21.9Calculus of lower urinary tract, unspecified

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Medicare coverage

N20.9 is named in 8 Medicare coverage policies: 8 listing it as supporting medical necessity. Which one applies depends on your Medicare contractor.

A55336Billing and Coding: Retroperitoneal Ultrasound
A56421Billing and Coding: CT of the Abdomen and Pelvis
A57718Billing and Coding: Vitamin D Assay Testing
A57736Billing and Coding: Vitamin D Assay Testing

Alphabetic index entries that lead here

Anuria›calculous(impacted) (recurrent)
Calculus, calculi, calculous›anuria(impacted) (recurrent)
Calculus, calculi, calculous›urinary(duct) (impacted) (passage) (tract)
Stone›urinary(duct) (impacted) (passage)

Code history

Unchanged in every release from FY2024 to FY2027.