N20.1 – Calculus of ureter
ICD-10-CM 2027 diagnosis code · Urolithiasis
ICD-10-CM code
N20.1
- Code
N20.1(claims format:N201)- Description
- Calculus of ureter
- Billable
- Yes – valid for HIPAA-covered transactions
- 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
- Parent codes
- N20
Notes for N20.1
Applicable to:
- Calculus of the ureteropelvic junction
- Ureteric stone
Notes inherited from parent codes
Instructional notes at a category or block level apply to every code below it.
N20 – Calculus of kidney and ureter
Applicable to:
- Calculous pyelonephritis
Index terms for N20.1
Entries in the ICD-10-CM alphabetic index that lead to this code:
Related codes in N20
Frequently asked questions
What is ICD-10 code N20.1?
N20.1 is the ICD-10-CM code for calculus of ureter, in the block N20-N23 (Urolithiasis).
Is N20.1 a billable code?
Yes. N20.1 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.
What category does N20.1 belong to?
It belongs to category N20 – Calculus of kidney and ureter.
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.