N20.0 Calculus of kidney
Billable ICD-10-CM code, FY2026.
Applicable to
- Nephrolithiasis NOS
- Renal calculus
- Renal stone
- Staghorn calculus
- Stone in kidney
Applies from N20 Calculus of kidney and ureter
Applicable to
Excludes1 (never code together)
- nephrocalcinosis (E83.59)
- that with hydronephrosis (N13.2)
MS-DRG index
Defines the logic of DRG(s) 693-694 in MDC 11.
Approximate ICD-9-CM (GEMs)
592.0 Calculus of kidney (approximate)
Code annotations containing back-references to N20.0
Back-references to N20.0
- Code Also:
E20.810 Autosomal dominant hypocalcemia ("calculus of kidney (N20.0)") - Type 1 Excludes:
E79 Disorders of purine and pyrimidine metabolism ("calculus of kidney (N20.0)") - Type 2 Excludes:
N21.0 Calculus in bladder ("staghorn calculus (N20.0)")
Back-references to N20
- Type 2 Excludes:
N13 Obstructive and reflux uropathy ("calculus of kidney and ureter without hydronephrosis (N20.-)")
Diagnosis Index entries for N20.0
- Abscess (connective tissue) (embolic) (fistulous) (infective) (metastatic) (multiple) (pernicious) (pyogenic) (septic) › kidney › with calculus
- Calculus, calculi, calculous › diverticulum › kidney
- Calculus, calculi, calculous › kidney (impacted) (multiple) (pelvis) (recurrent) (staghorn)
- Calculus, calculi, calculous › pyelitis (impacted) (recurrent)
- Infection, infected, infective (opportunistic) › kidney (cortex) (hematogenous) › with calculus
- Stone (s) › kidney
- Stone (s) › renal
Nearby codes
N20 Calculus of kidney and ureterN20.0 Calculus of kidney (this code)N20.1 Calculus of ureterN20.2 Calculus of kidney with calculus of ureterN20.9 Urinary calculus, unspecified