April 9, 2021

Looking for help with codes for “small interpeduncular cistern hemorrhage”. Software is populating AIS code 140210.5 brain stem hemorrhage, and ICD 10 S06.389A Contusion, laceration, and hemorrhage of brainstem with loss of consciousness of NOS duration, initial encounter.

Interpeduncular cistern does code to brain stem. In the AIS clarification document from October 2019 they have
“Interpeduncular fossa (cistern) basal cisterns code as injury involving hemorrhage in the brainstem;”

The ICD-10 code has hemorrhage of brain stem also.
I would note any specifics related to LOC if you have documentation, as it will assume the LOC nfs otherwise.

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