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 period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
Child Codes (4)
Also Known As / Clinical Terms
Frequently Asked Questions
What is ICD-10 code N20?
ICD-10-CM code N20 represents "Calculus of kidney and ureter". It 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.
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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.