N27
Non-billableSmall kidney of unknown cause
Small kidney of unknown cause
This is a header/category code. For billing purposes, use a more specific child code from the list below.
Coding Notes
Includes
Conditions included under this code
- oligonephronia
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)
- disorders of kidney and ureter with urolithiasis (N20-N23)
Child Codes (3)
Also Known As / Clinical Terms
UMLS
- Decreased number of nephronsC2673888
- Decreased numbers of nephronsC2673888
- OligonephroniaC2673888
- oligonephroniaC2673888
- Kidney smallC0156247
- Small kidneyC0156247
- Small kidney (finding)C0156247
- Small kidney of unknown causeC0156247
- Small kidney of unknown cause (finding)C0156247
- Small kidney, unspecifiedC0156247
- Small kidneysC0156247
- kidney smallC0156247
- kidneys smallC0156247
- small kidneyC0156247
Frequently Asked Questions
What is ICD-10 code N27?
ICD-10-CM code N27 represents "Small kidney of unknown cause". It is a non-billable header code — use a more specific child code for billing purposes.
Is N27 a billable code?
No, N27 is a non-billable header code. You need to use one of its more specific child codes for billing. There are 3 child codes under N27.
What chapter is N27 in?
N27 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
What are the subcategories under N27?
N27 has 3 child codes, including: N27.0 (Small kidney, unilateral), N27.1 (Small kidney, bilateral), N27.9 (Small kidney, unspecified).
What are the UMLS CUIs for N27?
N27 is linked to 2 UMLS Concept Unique Identifiers: C2673888, C0156247. 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.