Nephropathy induced by other drug/meds/biol subst

This code signifies kidney damage or disease that is directly caused by the administration of a medication, drug, or biological substance, excluding those specifically classified elsewhere (e.g., heavy metals, analgesics). It represents an adverse effect where the kidneys are the primary target organ of toxicity.

Use this code when documentation clearly links renal impairment, such as acute kidney injury, chronic kidney disease, or specific nephropathies (e.g., interstitial nephritis, tubular necrosis), to a prescribed or illicit drug, medicament, or biological agent not covered by more specific N14 codes. Supporting documentation should identify the causative substance and the resulting kidney pathology.

• Always identify the specific drug or substance causing the nephropathy using an external cause code (T36-T50 with 5th or 6th character for adverse effect).
• Do not use this code for nephropathies due to heavy metals (N14.3) or analgesics (N14.4).
• Sequence this code as the primary diagnosis when the drug-induced nephropathy is the reason for the encounter, followed by the specific drug code.