852.09 — Subarachnoid hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified

852.09 is an ICD-9-CM diagnosis code for subarachnoid hemorrhage following injury without mention of open intracranial wound, with concussion, unspecified. ICD-9-CM was retired for U.S. claims on October 1, 2015, when ICD-10-CM took over.

The CMS General Equivalence Mappings translate it to 2 ICD-10-CM codes, such as S06.6X0A (Traumatic subarachnoid hemorrhage without loss of consciousness, initial encounter) and S06.6X9A (Traumatic subarachnoid hemorrhage with loss of consciousness of unspecified duration, initial encounter). All of these are approximate matches, so review the record to pick the right one.