U.S. ICD-10-CM · FY 2027

N16 ICD-10-CM Code: Renal tubulo-interstitial disorders in diseases classified elsewhere

A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.

Code definition

Official description

N16

Renal tubulo-interstitial disorders in diseases classified elsewhere

ICD-10-CM diagnosis code · United States clinical modification

Classification

Where N16 sits

  1. 1

    Chapter 14

    Diseases of the genitourinary system (N00-N99)

  2. 2

    Section

    Renal tubulo-interstitial diseases (N10-N16)

  3. 3

    Category N16

    Renal tubulo-interstitial disorders in diseases classified elsewhere

  4. 4

    Code N16

    Renal tubulo-interstitial disorders in diseases classified elsewhere

Documentation details

Notes for this code

Inclusion terms

  • Pyelonephritis
  • Tubulo-interstitial nephritis

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)

Use additional code

No “use additional code” instruction is listed for N16.

Excludes1

Conditions that should not be reported together with this code.

  • 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)

Excludes2

Conditions not included here that may be reported separately when present.

No Excludes2 note is listed for N16.

Transparency

Source and release

Data release

U.S. ICD-10-CM · FY 2027

Effective date

Oct 1, 2026

Publisher

Vero Scribe Inc.

This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.

Review the CDC/NCHS ICD-10-CM source

Code-specific guidance

Frequently asked questions

What does ICD-10-CM code N16 mean?

N16 is the FY 2027 U.S. ICD-10-CM code for “Renal tubulo-interstitial disorders in diseases classified elsewhere.”

Is N16 a billable or specific ICD-10-CM code?

Yes. In the FY 2027 reference data used on this page, N16 has no child codes and is presented as a billable/specific code. Always confirm the active code set and payer requirements before use.

Where is N16 located in ICD-10-CM?

N16 is listed in Chapter 14, Diseases of the genitourinary system (N00-N99), within Renal tubulo-interstitial diseases (N10-N16) (N10–N16), under category N16, Renal tubulo-interstitial disorders in diseases classified elsewhere.

What coding notes are listed for N16?

Its listed inclusion terms are Pyelonephritis; Tubulo-interstitial nephritis. Code-first instructions: 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). Excludes1 notes: 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). No Excludes2 note is listed.

Ready to transform your clinical documentation?

Join Vero and see how effortless documentation can be.

Try for free

  • No credit card required

  • Cancel anytime