N13.30
BillableUnspecified hydronephrosis
Unspecified hydronephrosis
Coding Notes
Includes
Conditions included under this code
- 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
- •calculus of kidney and ureter without hydronephrosisN20
- •congenital obstructive defects of renal pelvis and ureterQ62.0-Q62.3
- •hydronephrosis with ureteropelvic junction obstructionQ62.11
- •obstructive pyelonephritisN11.1
Related Codes(1)
Also Known As / Clinical Terms(50)
SNOMED CT
- Erythrocytosis due to hydronephrosis9426002
- Hydronephrosis43064006
- Inappropriate secondary erythrocytosis44456000
- Hydrocalycosis71110009
- Bilateral hydronephrosis95581005
- Dilatation of renal pelvis197820003
- Dilation of renal pelvis197820003
- Pyelectasia197820003
- Pyelectasis197820003
- Acquired hydronephrosis236593005
- Secondary hydronephrosis236593005
- Calicectasis371011007
- Caliectasis371011007
- Calyceal dilatation371011007
- Dilatation of calyx371011007
- Dilation of calyx371011007
- Idiopathic hydronephrosis373651000
- Acquired obstructive defect of renal pelvis405573009
- Acquired caliectasis423919000
- Acquired dilatation of renal calices423919000
- Acquired obstruction of urinary tract708515003
UMLS
Clinical Terms
- Hydronephroses
- Dilatation of renal pelvis
- Bilateral hydronephrosis
- Pyelectasis
- Inappropriate secondary erythrocytosis
- Acquired obstructive defect of renal pelvis
- Pyelectasia
- Secondary hydronephrosis
- Calyceal dilatation
- Acquired caliectasis
- Hydronephrosis (disorder)
- Hydronephrosis
- Acquired dilatation of renal calices
- Dilation of renal pelvis
- Calicectasis
- Erythrocytosis due to hydronephrosis
- Acquired obstruction of urinary tract
- Dilation of calyx
- Caliectasis
- Acquired hydronephrosis
- Dilatation of calyx
- Idiopathic hydronephrosis
- Hydrocalycosis
Frequently Asked Questions
What is the ICD-10 code for unspecified hydronephrosis?
The ICD-10-CM code for unspecified hydronephrosis is N13.30. The full clinical description is "Unspecified hydronephrosis". N13.30 is a billable/specific code that can be used on insurance claims and medical billing.
What does ICD-10 code N13.30 mean?
ICD-10-CM code N13.30 represents “Unspecified hydronephrosis”. It is classified under Chapter 14: Diseases of the Genitourinary System and is a billable/specific code that can be used on a claim.
Is N13.30 a billable code?
Yes, N13.30 is a billable/specific ICD-10-CM code and can be used to indicate a diagnosis on a medical claim.
What chapter is N13.30 in?
N13.30 is in Chapter 14: Diseases of the Genitourinary System (codes N00-N99).
What codes cannot be used with N13.30?
N13.30 has Excludes1 notes indicating codes that cannot be used together with it, including: pyeloureteritis cystica (N28.85); hydronephrosis with infection (N13.6).
What SNOMED CT codes does N13.30 map to?
N13.30 maps to 12 SNOMED CT concepts: 423919000, 236593005, 708515003, 405573009, 95581005, and 7 more. SNOMED CT is a clinical terminology used in electronic health records.
What are the UMLS CUIs for N13.30?
N13.30 is linked to 1 UMLS Concept Unique Identifier: C0020295. The UMLS (Unified Medical Language System) integrates multiple biomedical vocabularies maintained by the U.S. National Library of Medicine.
How does N13.30 relate to ICF functioning codes?
ICF (International Classification of Functioning, Disability and Health) codes describe how conditions like unspecified hydronephrosis 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 N13.30?
There is no direct ICD-11 mapping available for N13.30 in the WHO crosswalk tables. This may mean the concept is classified differently in ICD-11. Use the ICD-10 to ICD-11 converter to search for related codes.
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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.