N13.3
Other and unspecified hydronephrosis
Non-billable headerNot valid on its own. Use one of the more specific codes under it.
N13.3 is a non-billable ICD-10-CM code header for other and unspecified hydronephrosis. Report a more specific code from it instead. It is part of the FY2027 code set, effective October 1, 2026. The more specific codes under it are N13.30 Unspecified hydronephrosis and N13.39 Other hydronephrosis. Its coding notes include 2 Excludes1 entries and 12 Excludes2 entries.
Excludes1
Not coded here. The listed conditions generally should not be reported together.
This code
- hydronephrosis with infection (N13.6)
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Inherited from N13 Obstructive and reflux uropathy
Also from chapter/block level (8 notes)
Inherited from Chapter 14 Diseases of the genitourinary system
- 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)
Includes
Further defines or gives examples of the content of the category.
Also from chapter/block level (1 note)
Inherited from N10–N16 Renal tubulo-interstitial diseases
- pyelonephritis