N14 – Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions

ICD-10-CM 2027 diagnosis code · Renal tubulo-interstitial diseases

Non-billable header

ICD-10-CM code N14

Code: N14 (claims format: N14)
Description: Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions
Short description: Drug- & heavy-metal-induced tubulo-interstitial & tublr cond
Billable: No – use a more specific code below
Valid for: Dates of service October 1, 2026 – September 30, 2027 (FY2027)
Chapter: 14. Diseases of the genitourinary system (N00-N99)
Block: N10-N16 Renal tubulo-interstitial diseases

Billable codes under N14

N14 is a header code and cannot be used on claims. Choose the most specific code:

N14.0 – Analgesic nephropathyBillable
N14.1 – Nephropathy induced by other drugs, medicaments and biological substancesHeader (more codes below)
N14.2 – Nephropathy induced by unspecified drug, medicament or biological substanceBillable
N14.3 – Nephropathy induced by heavy metalsBillable
N14.4 – Toxic nephropathy, not elsewhere classifiedBillable

Notes for N14

Code first:

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

Use additional code:

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

Notes inherited from parent codes

Instructional notes at a category or block level apply to every code below it.

Block N10-N16

Includes:

pyelonephritis

Excludes1 (not coded here):

pyeloureteritis cystica (N28.85)

Frequently asked questions

What is ICD-10 code N14?

N14 is the ICD-10-CM code for drug- and heavy-metal-induced tubulo-interstitial and tubular conditions, in the block N10-N16 (Renal tubulo-interstitial diseases).

Is N14 a billable code?

No. N14 is a header code with more specific child codes; report one of the billable codes listed above.

Source: CDC/NCHS ICD-10-CM FY2027 code files, tabular list and index. Reference only – code assignment must follow the official ICD-10-CM guidelines and documentation in the medical record.