N20
Non-billableCalculus of kidney and ureter
Calculus of kidney and ureter
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Inclusion Terms
Alternative clinical terms for this condition
- Calculous pyelonephritis
Excludes 1
Codes that cannot be used together with this code (mutual exclusion)
Excludes 2
Conditions not included here, but the patient may have both
- •certain conditions originating in the perinatal periodP04-P96
- •certain infectious and parasitic diseasesA00-B99
- •complications of pregnancy, childbirth and the puerperiumO9A)O00
- •congenital malformations, deformations and chromosomal abnormalitiesQ00-Q99
- •endocrine, nutritional and metabolic diseasesE00-E88
- •injury, poisoning and certain other consequences of external causesS00-T88
- •neoplasmsC00-D49
- •symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classifiedR00-R94
Child Codes (4)
ICD-11 Equivalents(1)
ICD-11 Equivalents
View full mappingCorresponding ICD-11 codes from the WHO crosswalk mapping
Also Known As / Clinical Terms(6)
Frequently Asked Questions
What is the ICD-10 code for calculus of kidney and ureter?
The ICD-10-CM code for calculus of kidney and ureter is N20. The full clinical description is "Calculus of kidney and ureter". N20 is a non-billable header code. Use a more specific child code for billing purposes.
What does ICD-10 code N20 mean?
ICD-10-CM code N20 represents “Calculus of kidney and ureter”. It is classified under Chapter 14: Diseases of the Genitourinary System and is a non-billable header code. Use a more specific child code for billing purposes.
Is N20 a billable code?
No, N20 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 4 child codes under N20.
What chapter is N20 in?
N20 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
What codes cannot be used with N20?
N20 has Excludes1 notes indicating codes that cannot be used together with it, including: nephrocalcinosis (E83.59); that with hydronephrosis (N13.2).
What are the subcategories under N20?
N20 has 4 child codes, including: N20.0 (Calculus of kidney), N20.1 (Calculus of ureter), N20.2 (Calculus of kidney with calculus of ureter), N20.9 (Urinary calculus, unspecified).
What are the UMLS CUIs for N20?
N20 is linked to 2 UMLS Concept Unique Identifiers: C0268722, C0156257. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does N20 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like calculus of kidney and ureter affect a person's functioning — body functions, activities, participation, and environmental factors. AutoICD provides ICF Core Sets for 12+ conditions and can map clinical text to ICF categories automatically. Browse the ICF directory to explore functioning codes.
What is the ICD-11 equivalent of N20?
N20 maps to the ICD-11 code: GB70.Z (Calculus of upper urinary tract, unspecified).
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Includes SNOMED Clinical Terms® (SNOMED CT®) used by permission of SNOMED International. Includes content from the UMLS Metathesaurus, courtesy of the U.S. National Library of Medicine.