ICD-10 Code I60.3 – Nontraumatic subarachnoid hemorrhage from posterior communicating artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I60.3 – Nontraumatic subarachnoid hemorrhage from posterior communicating artery
What it is
I60.3 identifies a nontraumatic subarachnoid hemorrhage arising from the posterior communicating artery. It means bleeding has occurred in the subarachnoid space without trauma, and the source is documented as this specific artery.
Clinical signs
Typical findings include sudden severe headache, nausea, vomiting, neck stiffness, and possible loss of consciousness. Clinical features vary; refer to documentation and imaging or angiographic confirmation when available.
When to use this code
Use this code when the provider documents a spontaneous subarachnoid hemorrhage specifically linked to the posterior communicating artery. It is appropriate when imaging, operative notes, or specialist assessment identifies that vessel as the bleeding source. If the artery is not specified, check documentation before assigning this code.
Do not use for
Do not use I60.3 for traumatic intracranial bleeding or for subarachnoid hemorrhage from another artery. If the cause or vessel location is unclear, check documentation.
Coding tip
Match the code to the named bleeding source exactly; vessel-specific documentation matters for correct code selection.