N16
✓ Billable
Renal tubulo-interstitial disorders in diseases classified elsewhere
ICD-10-CM · FY2026 · Diseases of the Genitourinary System
Code
N16
System
ICD-10-CM
Billable
Yes — valid for submission
Effective
FY2026
Chapter
Diseases of the Genitourinary System
Source
CMS / CDC NCHS
⚠ Verify before billing. Confirm against the current CMS/NCHS ICD-10-CM files and your payer's rules before claims submission.
Official coding notes
From CMS's ICD-10-CM Tabular List.
Also known as
- Pyelonephritis
- Tubulo-interstitial nephritis
Excludes1 — never code together
- diphtheritic pyelonephritis and tubulo-interstitial nephritis (A36.84)
- pyelonephritis and tubulo-interstitial nephritis in candidiasis (B37.49)
- pyelonephritis and tubulo-interstitial nephritis in cystinosis (E72.04)
- pyelonephritis and tubulo-interstitial nephritis in salmonella infection (A02.25)
- pyelonephritis and tubulo-interstitial nephritis in sarcoidosis (D86.84)
- pyelonephritis and tubulo-interstitial nephritis in Sjogren syndrome (M35.04)
- pyelonephritis and tubulo-interstitial nephritis in systemic lupus erythematosus (M32.15)
- pyelonephritis and tubulo-interstitial nephritis in toxoplasmosis (B58.83)
- renal tubular degeneration in diabetes (E08-E13 with .29)
- syphilitic pyelonephritis and tubulo-interstitial nephritis (A52.75)
Code first
- underlying disease, such as:
- brucellosis (A23.0-A23.9)
- cryoglobulinemia (D89.1)
- glycogen storage disease (E74.0-)
- leukemia (C91-C95)
- lymphoma (C81.0-C85.9, C96.0-C96.9)
- multiple myeloma (C90.0-)
- sepsis (A40.0-A41.9)
- Wilson's disease (E83.01)
Frequently asked questions
What is ICD-10 code N16?
ICD-10-CM code N16 represents Renal tubulo-interstitial disorders in diseases classified elsewhere. It is a billable diagnosis code in the Diseases of the Genitourinary System chapter, effective October 1, 2025 – September 30, 2026.
Is N16 billable?
Yes. N16 is a valid billable ICD-10-CM code for insurance claims and clinical documentation.
What chapter is N16 in?
N16 belongs to the Diseases of the Genitourinary System chapter (N00–N99) of ICD-10-CM.
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