Renal tubulo-interstitial diseases (N10-N16) ICD-10-CM
The N10–N16 section covers renal tubulo-interstitial diseases with 44 ICD-10-CM diagnosis codes, of which 35 are billable in fiscal year 2027. The section is organized into the 7 code ranges listed below.
Includes
This note appears immediately under a three character code title to further define, or give examples of, the content of the category.
- pyelonephritis
Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.
- pyeloureteritis cystica N28.85
Code Ranges in This Section 7 ranges · 44 codes
The info icon previews the code ranges inside each row and its instructional notations from the official Tabular List.
About the N10–N16 Code Range
These kidney conditions involve the tubules and surrounding tissue. The group also includes urinary obstruction, reflux, and conditions linked to drugs or heavy metals.
N10 identifies sudden-onset pyelonephritis, a form of kidney inflammation. N11 covers chronic inflammation and separates reflux-associated, obstructive, other, and unspecified forms. N12 applies when the condition is not specified as acute or chronic.
N13 groups obstruction and reflux conditions, with subdivisions naming the condition or the location and cause of obstruction. N14 separates drug-related, heavy-metal-related, and other toxic conditions. N15 groups other kidney tubule and surrounding-tissue conditions, including abscesses. N16 identifies these disorders when they occur in diseases classified elsewhere.
Questions About This Page
How many codes are in the N10-N16 range?
The N10-N16 range contains 44 ICD-10-CM diagnosis codes in FY 2027. 35 of them are billable, and the rest are category headers that organize the section.
What conditions does N10-N16 cover?
The range covers renal tubulo-interstitial diseases. The code ranges listed above break it into groups of related conditions, and each one links to its own page with the full code list.
Related References
Source: CMS FY 2027 ICD-10-CM Tabular List and order file, effective October 1, 2026 through September 30, 2027.
