Nephrogenic diabetes insipidus

This code signifies a rare kidney disorder where the renal tubules are unable to respond to antidiuretic hormone (ADH), leading to excessive urination and thirst. Despite normal ADH levels, the kidneys cannot concentrate urine, resulting in dehydration and electrolyte imbalances.

Apply this code when documentation explicitly states a diagnosis of nephrogenic diabetes insipidus. This diagnosis is typically supported by clinical findings of polyuria, polydipsia, and a dilute urine despite water deprivation, along with normal or elevated ADH levels.

• Differentiate from central diabetes insipidus, which involves insufficient ADH production.
• Ensure documentation specifies "nephrogenic" to avoid confusion with other forms of diabetes insipidus.
• Code any associated electrolyte disturbances or dehydration separately, if present and clinically significant.