ICD-10 Code D59.6 – Hemoglobinuria due to hemolysis from other external causes (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code D59.6 – Hemoglobinuria due to hemolysis from other external causes
What it is
D59.6 identifies hemoglobin in the urine caused by red blood cell destruction from an external cause. Use it when documentation links hemolysis to an outside factor rather than an intrinsic blood disorder.
Clinical signs
Typical findings include dark or red-brown urine and evidence of hemolysis. Clinical features vary; refer to documentation for the specific external cause and any associated anemia or lab-confirmed hemoglobinuria.
When to use this code
Use D59.6 when the provider documents hemoglobinuria due to hemolysis from an external cause, such as an exposure or injury-related trigger. Code only when the record clearly attributes hemolysis to that outside cause. If the cause is not specified, check documentation.
Do not use for
Do not use this code for hematuria, which is blood in the urine from urinary tract sources. Also avoid it when hemolysis is due to an intrinsic hematologic disorder or when the cause is unclear.
Coding tip
Look for explicit documentation of both hemoglobinuria and the external cause of hemolysis before assigning D59.6.