N20.0
N20.0: Calculus of kidney
Billable / specific codeICD-10-CM
N20.0 is a billable, specific ICD-10-CM code for calculus of kidney. It is valid for submission on a claim.
Check N20.0 with the rest of the claim: free scrubberInclusion terms
Alternative wordings a physician may use in the chart for this same code.
- Nephrolithiasis NOS
- Renal calculus
- Renal stone
- Staghorn calculus
- Stone in kidney
Other codes that can never be billed with N20.0
Their own Excludes1 notes name this code, so the conflict is not listed above.
- E79Disorders of purine and pyrimidine metabolism
Risk adjustment
No CMS-HCC V28 category: this code does not change a RAF score.
Medicare coverage
N20.0 is named in 6 Medicare coverage policies: 6 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
- Calculus, calculi, calculous›kidney(impacted) (multiple) (pelvis) (recurrent) (staghorn)
- Calculus, calculi, calculous›pyelitis(impacted) (recurrent)
- Stone›kidney
- Stone›renal
- Abscess›kidney›with calculus
- Calculus, calculi, calculous›diverticulum›kidney
- Infection, infected, infective›kidney›with calculus
Code history
Unchanged in every release from FY2024 to FY2027.