ICD-10 Code I60.30 – Nontraumatic subarachnoid hemorrhage from unspecified posterior communicating artery (2026): Diagnosis, Symptoms & Billing Guide
2026 ICD-10-CM Diagnosis Code I60.30 – Nontraumatic subarachnoid hemorrhage from unspecified posterior communicating artery
What it is
This code identifies a spontaneous subarachnoid hemorrhage arising from the posterior communicating artery, when the side is not specified. It refers to bleeding into the space around the brain without a traumatic cause.
Clinical signs
Typical findings include sudden severe headache, neck stiffness, nausea, vomiting, photophobia, or altered mental status. Clinical features vary; refer to documentation and imaging results confirming subarachnoid bleeding.
When to use this code
Use I60.30 when the provider documents a nontraumatic subarachnoid hemorrhage from the posterior communicating artery and does not specify right or left. It is appropriate when imaging, angiography, or operative notes identify this vessel as the source. Check documentation if the artery is described differently or if laterality is stated.
Do not use for
Do not use this code for traumatic subarachnoid hemorrhage or for hemorrhage from a different cerebral vessel. If the laterality is documented, select the more specific code.
Coding tip
Look for the exact vessel name and whether laterality is documented before assigning I60.30.