ICD-10 diagnosis code

N12 Tubulo-interstitial nephritis, not specified as acute or chronic

N12 is the ICD-10 code for Tubulo-interstitial nephritis, not specified as acute or chronic. It is a three-character category that is not subdivided further. It belongs to the block N10–N16 (Renal tubulo-interstitial diseases) in Chapter XIV, Diseases of the genitourinary system.

Code type: Category (3 characters)
Chapter: XIV · N00–N99
Classification: WHO ICD-10, 2019 version

What N12 includes

Conditions and terms that are coded here.

Interstitial nephritis NOS
Pyelitis NOS
Pyelonephritis NOS

What N12 excludes

Conditions that look similar but belong under another code.

calculous pyelonephritis N20.9

N12 in national editions

Countries report with their own edition of ICD-10. Most keep the WHO code and add more specific codes beneath it.

SwedenICD-10-SE

N12Tubulo-interstitiell nefrit, ej specificerad som akut eller kronisk

N12.9Tubulo-interstitiell nefrit, ej specificerad som akut eller kronisk

NorwayICD-10-NO

N12Tubulointerstitiell nefritt og pyelonefritt ikke spesifisert som akutt eller kronisk

DenmarkICD-10-DK

DN12Tubulo-interstitiel nefritis UNS

DN129Pyelonefritis UNS

FinlandICD-10-FI

N12Tubulointerstitiaalinen munuaistulehdus, jota ei ole määritetty akuutiksi eikä pitkäaikaiseksi

GermanyICD-10-GM

N12Tubulointerstitielle Nephritis, nicht als akut oder chronisch bezeichnet

FranceICD-10-FR

N12Néphrite tubulo-interstitielle, non précisée comme aiguë ou chronique

NetherlandsICD-10-NL

N12tubulo-interstitiële nefritis, niet-gespecificeerd als acuut of chronisch

United StatesICD-10-CM

N12Tubulo-interstitial nephritis, not specified as acute or chronic

Based on the World Health Organization’s International Statistical Classification of Diseases and Related Health Problems, 10th revision (ICD-10), 2019 version, and the national editions published by each country’s health authority. This page is a reference, not coding advice; follow your national coding rules when you report.

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