ICD-10-CM 2027 diagnosis code

N14Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions

Not billable — use a more specific code

N14 is a header code, so it can't be reported by itself. Choose one of the 5 more specific codes beneath it.Short description: Drug- & heavy-metal-induced tubulo-interstitial & tublr cond

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About N14

N14 is the ICD-10-CM diagnosis code for Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions. It belongs to block N10-N16 (renal tubulo-interstitial diseases) and chapter 14 (diseases of the genitourinary system). It is a header code, so it can't be reported by itself; one of its 5 subcodes must be used instead.

To report this condition, pick the subcode that matches the documentation: N14.0 (nephropathy), N14.1 (substances), N14.2 (substance), N14.3 (metals) and N14.4 (classified).

Code first: poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4).

Use an additional code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5).

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Specific codes under N14

Coding notes

Code firstSequence the underlying condition first

poisoning due to drug or toxin, if applicable (T36-T65 with fifth or sixth character 1-4)

Use additional codeAdd a secondary code to fully describe the condition

code for adverse effect, if applicable, to identify drug (T36-T50 with fifth or sixth character 5)

Notes that apply from higher levels

Instructions written at a parent level also apply to N14.

Broader instructions also apply from N10-N16 Renal tubulo-interstitial diseases and Chapter 14: Diseases of the genitourinary system.

Code history

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2027

FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
No changes since FY2016.

Common questions about N14

Is N14 billable?: No. N14 is a header code. Report one of its more specific subcodes instead.