1. Home
  2. ICD-10-CM Codes List
  3. N00–N99
  4. N10-N16
  5. Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14)

Drug- and heavy-metal-induced tubulo-interstitial and tubular conditions (N14)

ICD-10 code section N14 covers kidney damage caused specifically by certain drugs and heavy metals, including different types of tubulo-interstitial and tubular conditions. These codes help identify renal problems directly linked to toxic substances, differentiating from other kidney diseases.

This section includes codes such as N14.0 for analgesic nephropathy, which is kidney damage caused by long-term use of pain relievers. Synonyms such as chronic drug-induced tubulointerstitial nephritis clarify this condition. N14.1 and its subcodes (e.g., N14.11 for contrast-induced nephropathy) classify kidney disease caused by various other drugs and biological substances. N14.19 expands on nephropathies linked to drugs like penicillamine, lithium, or cyclosporine, often described as chronic drug-induced renal disease. For toxic effects from heavy metals like lead or mercury, N14.3 includes terms such as saturnine nephropathy and chronic lead nephropathy. Finally, N14.4 addresses toxic nephropathy cases that do not fit elsewhere, including oxalate and aristolochic acid nephropathies. These ICD-10 codes are essential for accurately coding kidney conditions traced to specific toxins or medications.

Instructional Notations

Code First

Certain conditions have both an underlying etiology and multiple body system manifestations due to the underlying etiology. For such conditions, the ICD-10-CM has a coding convention that requires the underlying condition be sequenced first followed by the manifestation. Wherever such a combination exists, there is a "use additional code" note at the etiology code, and a "code first" note at the manifestation code. These instructional notes indicate the proper sequencing order of the codes, etiology followed by manifestation.

  • poisoning due to drug or toxin, if applicable T36 T65

Use Additional Code

The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.

  • code for adverse effect, if applicable, to identify drug T36 T50