2026 ICD-10-CM Diagnosis Code N20.2Calculus of kidney with calculus of ureter
ICD-10-CM Codes›N00–N99›N20-N23›N20
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
N20.2 is a billable ICD-10-CM diagnosis code for calculus of kidney with calculus of ureter. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 693 through 694. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 43 closely related codes. Coders also document this condition as calculus in pelviureteric junction. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Calculus of urinary tract.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Calculus in pelviureteric junction
- Calculus in renal pelvis
- Calculus of kidney and ureter
- Ureteric stone
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Kidney Stones
A kidney stone is a solid piece of material that forms in the kidney from substances in the urine. It may be as small as a grain of sand or as large as a pearl. Most kidney stones pass out of the body without help from a doctor. But sometimes a stone will not go away.
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert N20.2 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About N20.2Overview
What is the ICD-10 code for calculus of kidney with calculus of ureter?
The ICD-10-CM code for calculus of kidney with calculus of ureter is N20.2 (sometimes written as N202). It is billable on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
Is N20.2 (Calculus of kidney and ureter) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report calculus of kidney with calculus of ureter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does N20.2 group to?
When calculus of kidney with calculus of ureter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 693, 694, with relative weights from 0.7817 to 1.3445 depending on complications. Higher weights mean higher Medicare reimbursement.
Is N20.2 a CC or MCC?
CMS lists N20.2 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 43 closely related codes in its exclusion list.
What is the ICD-9 equivalent of N20.2?
Under the General Equivalence Mappings, calculus of kidney with calculus of ureter converts to ICD-9-CM 592.1 (calculus of ureter) and 592.0 (calculus of kidney). The mapping is approximate, so confirm the match fits the documentation.
