N14.4 – Toxic nephropathy, not elsewhere classified

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

Billable code

ICD-10-CM code N14.4

Code: N14.4 (claims format: N144)
Description: Toxic nephropathy, not elsewhere classified
Billable: Yes – valid for HIPAA-covered transactions
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
Parent codes: N14

Notes inherited from parent codes

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

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

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)

Block N10-N16

Includes:

pyelonephritis

Excludes1 (not coded here):

pyeloureteritis cystica (N28.85)

Index terms for N14.4

Entries in the ICD-10-CM alphabetic index that lead to this code:

Nephropathy, toxic NEC

Related codes in N14

Frequently asked questions

What is ICD-10 code N14.4?

N14.4 is the ICD-10-CM code for toxic nephropathy, not elsewhere classified, in the block N10-N16 (Renal tubulo-interstitial diseases).

Is N14.4 a billable code?

Yes. N14.4 is a billable/specific code that can be used to indicate a diagnosis for reimbursement purposes.

What category does N14.4 belong to?

It belongs to category N14 – Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions.

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.