N25.9
Disorder resulting from impaired renal tubular function, unspecified
BillableComplete code, valid to report
N25.9 (also written N259) is a billable ICD-10-CM diagnosis code for disorder resulting from impaired renal tubular function, unspecified. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 5 codes in category N25 (Disorders resulting from impaired renal tubular function). The Alphabetic Index lists it under 7 entries. Its coding notes include 9 Excludes2 entries.
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
Also from chapter/block level (9 notes)
Inherited from N25–N29 Other disorders of kidney and ureter
- disorders of kidney and ureter with urolithiasis (N20-N23)
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)
Alphabetic Index terms
Terms the official Alphabetic Index lists for this code. 7 entries
- Disorder (of), impaired renal tubular function
- Disorder (of), kidney, functional (tubular)
- Disorder (of), kidney, tubular function
- Disorder (of), renal function, impaired (tubular)
- Disorder (of), tubulo-renal function, impaired
- Impaired, impairment (function), kidney, disorder resulting from
- Impaired, impairment (function), renal (acute) (chronic), disorder resulting from