N16
BillableRenal tubulo-interstitial disorders in diseases classified elsewhere
N16 is the ICD-10-CM code for Renal tubulo-interstitial disorders in diseases classified elsewhere. It is a billable, specific code valid for reimbursement.
- Status
- Billable
- Chapter
- N00-N99
- Edition
- FY2026
N00-N99 Diseases of the genitourinary system
What this means — in plain language
MedlinePlus · NIHYou have two kidneys, each about the size of your fist. They are near the middle of your back, just below the rib cage. Inside each kidney there are about a million tiny structures called nephrons. They filter your blood. They remove wastes and extra water, which become urine. The urine flows through tubes called ureters. It goes to your bladder, which stores the urine until you go to the bathroom. Most kidney…
Read more about Kidney Diseases at MedlinePlus ↗Source: U.S. National Library of Medicine (MedlinePlus). Informational only — not medical advice.
Includes
- •Pyelonephritis
- •Tubulo-interstitial nephritis
Excludes1 — not coded here
- •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
Frequently asked questions
- What is ICD-10 code N16?
- N16 is the ICD-10-CM code for "Renal tubulo-interstitial disorders in diseases classified elsewhere". It falls under N00-N99 Diseases of the genitourinary system.
- Is N16 a billable code?
- Yes — N16 is a billable, specific ICD-10-CM code valid for reimbursement.
- What is excluded from N16?
- Excludes1 (not coded here): 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).
Source: CMS ICD-10-CM FY2026. For informational purposes only — not medical advice. See our medical disclaimer.
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