N20 – Calculus of kidney and ureter
ICD-10-CM 2027 diagnosis code · Urolithiasis
ICD-10-CM code
N20
- Code
N20(claims format:N20)- Description
- Calculus of kidney and ureter
- Billable
- No – use a more specific code below
- Valid for
- Dates of service October 1, 2026 – September 30, 2027 (FY2027)
- Chapter
- 14. Diseases of the genitourinary system (N00-N99)
- Block
- N20-N23 Urolithiasis
Billable codes under N20
N20 is a header code and cannot be used on claims. Choose the most specific code:
- N20.0 – Calculus of kidneyBillable
- N20.1 – Calculus of ureterBillable
- N20.2 – Calculus of kidney with calculus of ureterBillable
- N20.9 – Urinary calculus, unspecifiedBillable
Notes for N20
Applicable to:
- Calculous pyelonephritis
Frequently asked questions
What is ICD-10 code N20?
N20 is the ICD-10-CM code for calculus of kidney and ureter, in the block N20-N23 (Urolithiasis).
Is N20 a billable code?
No. N20 is a header code with more specific child codes; report one of the billable codes listed above.
Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.