ICD-10-CM 2027 diagnosis code

N25Disorders resulting from impaired renal tubular function

Not billable — use a more specific code

N25 is a header code, so it can't be reported by itself. Choose one of the 4 more specific codes beneath it.

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N25

N25 is the ICD-10-CM diagnosis code for disorders resulting from impaired renal tubular function. It belongs to block N25-N29 (other disorders of kidney and ureter) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 4 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: N25.0 (osteodystrophy), N25.1 (insipidus), N25.8 (function) and N25.9 (unspecified).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under N25

Notes that apply from higher levels

Instructions written at a parent level also apply to N25.

Broader instructions also apply from N25-N29 Other disorders of kidney and ureter and Chapter 14: Diseases of the genitourinary system.

Code history

2016
2017
2018
2019
2020
2021
2022
2023
2024
2025
2026
2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about N25

Is N25 billable?: No. N25 is a header code. Report one of its more specific subcodes instead.