ICD-10 N20.0
Billable / SpecificCalculus of kidney
About ICD-10-CM N20.0
ICD-10-CM code N20.0 represents Calculus of kidney. This is a billable/specific code in the Genitourinary System chapter (block N20). The 2026 edition of ICD-10-CM N20.0 became effective on October 1, 2025.
Inclusion Terms / Approximate Synonyms
Clinical terms and conditions classified under N20.0. Per CMS ICD-10-CM Tabular 2026.
- Nephrolithiasis NOS
- Renal calculus
- Renal stone
- Staghorn calculus
- Stone in kidney
Medicare LCD Coverage for N20.0
Local Coverage Determinations (LCDs) from CMS MACs that list N20.0 as a covered diagnosis.
Showing top 10 of 19 total . Click a CPT for full coverage scope.
Commercial Payer Coverage
Coverage policies from major commercial payers referencing N20.0.
1 Cigna
5 Medicare
1 Aetna
CPT Codes Commonly Billed with N20.0
Procedures frequently paired with this diagnosis based on PayerReady's Dx↔Px linkage data.
Convert N20.0 to ICD-9-CM
Per CMS General Equivalence Mappings (GEMs), useful for legacy data review and historical claim analysis.
| ICD-10 | ICD-9 | Mapping Flags |
|---|---|---|
| N20.0 | 5920 | 10000 |
Flags format (5 digits): Approximate · No Map · Combination · Scenario · Choice List. Source: CMS 2017 GEMs (final version).
Codes Adjacent To N20.0
Other codes in section N20-N23 (Urolithiasis).
ICD-10 N20.0, Billing FAQ
Is ICD-10 code N20.0 billable? +
Yes, N20.0 is a billable ICD-10-CM code that can appear as a primary or secondary diagnosis on claims.
What other names or terms map to N20.0? +
ICD-10 N20.0 includes: Nephrolithiasis NOS; Renal calculus; Renal stone, and 2 more clinical synonyms.
What CPT codes are commonly billed with N20.0? +
Procedures frequently paired with N20.0 include: 81001, 50590.
What ICD-9 codes does N20.0 map to? +
Per CMS GEMs, N20.0 maps to ICD-9 codes: 5920. Useful for legacy data review and historical claim analysis.
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Reviewed by the PayerReady Medical Coding Team
Verified against the CMS 2026 code set on May 31, 2026.
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