Renal tubulo-interstitial disorders in diseases classified elsewhere
Chapter 14:Diseases of the genitourinary system
ICD-10 N16 is a billable code used to indicate a diagnosis of renal tubulo-interstitial disorders in diseases classified elsewhere.
Renal tubulo-interstitial disorders encompass a range of conditions affecting the renal tubules and interstitial tissue, often secondary to other diseases. Pyelonephritis, an infection of the kidney, can lead to inflammation and damage to the renal interstitium. Interstitial nephritis, which may be acute or chronic, is characterized by inflammation of the renal interstitium and can be caused by infections, autoimmune diseases, or medications. Hydronephrosis, the swelling of a kidney due to a build-up of urine, can occur from obstruction or reflux and may lead to interstitial damage if not addressed. Drug-induced nephropathy is a significant concern, particularly with certain antibiotics and non-steroidal anti-inflammatory drugs (NSAIDs), which can cause acute interstitial nephritis. Urinary tract infections (UTIs) can also contribute to renal tubulo-interstitial disorders if they ascend to the kidneys. Management often involves antibiotics tailored to the specific infection or condition, with careful monitoring for potential nephrotoxic effects. Accurate coding requires a thorough understanding of the underlying conditions and their impact on renal function.
Detailed history of renal function, laboratory results, and treatment plans.
Patients with chronic kidney disease secondary to interstitial nephritis or pyelonephritis.
Ensure clear documentation of the cause of renal impairment and any interventions performed.
Comprehensive records of infections, antibiotic treatments, and response to therapy.
Patients with recurrent UTIs leading to renal complications.
Document the specific pathogens involved and the rationale for antibiotic choice.
Used to evaluate renal function and detect infections.
Document the reason for urinalysis and findings.
Nephrologists may require additional tests to assess renal function.
Use N16 when the renal tubulo-interstitial disorder is secondary to another classified disease and no more specific code applies. Ensure that the underlying condition is well-documented.
