I62.03
BillableNontraumatic chronic subdural hemorrhage
HCC Category Mapping
V28HCC 248 — Cerebral Hemorrhage
0.289V24HCC 99 — Intracranial Hemorrhage
0.262ESRDHCC 99 — Intracranial Hemorrhage
0.000What This Code Means
Long-standing bleeding between the brain and its outer membrane (subdural space) not caused by trauma, typically present for more than 20 days.
Coding Tips
- •Chronic subdural hemorrhage is typically more than 20 days old; verify duration in clinical notes
- •May present with subtle symptoms and can be managed conservatively or surgically
Clinical Significance
Nontraumatic chronic subdural hemorrhage is a slowly developing collection of blood between the brain and dura, typically present for more than 20 days. It is commonly seen in elderly patients, those on anticoagulation, or patients with brain atrophy. While less acutely life-threatening than acute hemorrhage, it can cause progressive cognitive decline, gait disturbance, and focal deficits. It is significant for risk adjustment due to the ongoing monitoring and potential surgical management required.
Documentation Requirements
- ✓Imaging confirmation showing chronic subdural characteristics (hypodense collection on CT, membrane formation)
- ✓Documentation of duration exceeding 20 days or chronic characteristics
- ✓Documentation of nontraumatic etiology
- ✓Clinical presentation including gradual onset of symptoms such as headache, confusion, or gait changes
- ✓Risk factor documentation including anticoagulation use, brain atrophy, or history of falls
- ✓Treatment plan including surgical drainage or conservative management rationale
Commonly Confused Codes
I62.01 — Acute nontraumatic subdural hemorrhage; rapid onset within hoursI62.02 — Subacute nontraumatic subdural hemorrhage; intermediate timing of 4-20 daysI62.00 — Unspecified nontraumatic subdural hemorrhage; use when chronicity is unclearG31.9 — Degenerative disease of nervous system; chronic subdural may mimic dementia symptoms
Code Hierarchy
└I62Other and unspecified nontraumatic intracranial hemorrhage└I62.0Nontraumatic subdural hemorrhage└I62.03Nontraumatic chronic subdural hemorrhage
└I62.03Nontraumatic chronic subdural hemorrhage