Internal hirudiniasis

This code signifies an infestation of leeches within the internal organs or orifices of the human body. This parasitic condition can affect various internal systems, leading to symptoms depending on the location of the infestation.

Apply this code when documentation clearly indicates the presence of leeches internally, such as in the gastrointestinal tract, respiratory passages, or genitourinary system. This typically follows endoscopic findings, surgical removal, or laboratory identification of internal leech infestation.

• Differentiate carefully between internal and external hirudiniasis; external infestations are coded elsewhere.
• Ensure documentation specifies the internal location of the leech for accurate clinical picture, though not required for this specific code.
• Consider sequencing this code as a primary diagnosis if the hirudiniasis is the reason for the encounter, or as a secondary diagnosis if it's a co-morbidity.