N16 RENAL TUBULO-INTERSTITIAL DISORD IN DISEASES CLASSD ELSWHR

Code Information

Diagnosis Code: N16
Short Description: Renal tubulo-interstitial disord in diseases classd elswhr
Long Description: Renal tubulo-interstitial disorders in diseases classified elsewhere
Code Version: 2025 ICD-10-CM

The code N16 is VALID for claim submission

Code Classification

Diseases of the genitourinary system (N00–N99)
- Renal tubulo-interstitial diseases (N10-N16)
  - Renal tubulo-interstitial disorders in diseases classified elsewhere (N16)

This code is valid for manifestation diagnoses

Synonyms

Acute nephritis due to another disorder
Acute tubulointerstitial nephritis
Acute tubulo-interstitial nephritis due to immunological disorder
Immunoglobulin G4 related disease
Immunoglobulin G4 related kidney disease
Pyelitis
Pyelitis associated with another disorder
Pyelonephritis associated with another disorder
Renal tubulo-interstitial disorder due to cystinosis

Diagnostic Related Group(s)

The code N16 is grouped in the following Diagnostic Related Group(s) MS-DRG V43.0

Other Kidney And Urinary Tract Diagnoses With Mcc (698)
Other Kidney And Urinary Tract Diagnoses With Cc (699)
Other Kidney And Urinary Tract Diagnoses Without Cc/mcc (700)

References to Index of Diseases and Injuries

The code N16 has the following ICD-10-CM references to the Index of Diseases and Injuries

Inclusion Terms:
- Pyelonephritis
- Tubulo-interstitial nephritis
Type 1 Excludes 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*)
Code First:
- underlying disease, such as:
- brucellosis (@A23.0*[email protected]*)
- cryoglobulinemia (@D89.1*)
- glycogen storage disease (@E74.0*-)
- leukemia (@C91*-@C95*)
- lymphoma (@C81.0*[email protected]*, @C96.0*[email protected]*)
- multiple myeloma (@C90.0*-)
- sepsis (@A40.0*[email protected]*)
- Wilson's disease (@E83.01*)

Crosswalk Information

ICD-10 Code		ICD-9 Code	ICD-9 Description
N16		583.81	Nephritis NOS in oth dis
N16		590.81	Pyelonephrit in oth dis

This ICD-10 to ICD-9 data is based on the 2018 General Equivalency Mapping (GEM) files published by the Centers for Medicare & Medicaid Services (CMS) for informational purposes only. The data is not an ICD-10 conversion tool and doesn’t guarantee clinical accuracy.

Similar Codes

ICD-10 Code	ICD-10 Description

This page was last updated on: 10/1/2025

Previous Code

Next Code