Leptospirosis icterohemorrhagica

This code identifies a severe form of leptospirosis, also known as Weil's disease, characterized by jaundice (icterus), hemorrhage, and often renal failure. It represents a systemic bacterial infection caused by Leptospira species, typically acquired through contact with contaminated water or animal urine. The condition can lead to significant organ damage and has a higher mortality rate compared to milder forms of leptospirosis.

Use this code when documentation explicitly states "Leptospirosis icterohemorrhagica" or "Weil's disease." It is also appropriate when clinical findings clearly indicate severe leptospirosis with evidence of jaundice and hemorrhagic manifestations, even if the specific term isn't used. Supporting documentation should include laboratory confirmation of leptospirosis and clinical notes detailing icterus, bleeding, and/or acute kidney injury.

• Do not use this code for other forms of leptospirosis without icterohemorrhagic features; refer to other codes within the A27 category.
• Always sequence this code as the primary diagnosis when it is the reason for the encounter.
• Code any associated organ complications, such as acute kidney failure (N17.-) or hepatitis (K71.0), as secondary diagnoses.