Information for Patients
ICD-10 code G46.3 for Brain stem stroke syndrome is a medical classification as listed by WHO under the range -Episodic and paroxysmal disorders .
Ischemic strokes and Hemorrhagic strokes can cause lesioning in the thalamus. So if you have Dx as a Thalamic Stroke then as per Index of diseases of ICD 9 CM, 434.91 is the only option.
Without blood and nutrients, your brain tissue quickly begins to die, which can have lasting effects. A thalamic stroke is a type of lacunar stroke, which refers to a stroke in a deep part of your brain. Thalamic strokes occur in your thalamus, a small but important part of your brain.
In addition to having a stroke in the thalamus, you could also suffer from a thalamic infarct. An infarct is when the stroke cuts off oxygen to your tissue to the degree that the tissue dies. Depending on the severity and location within the thalamus, infarcts can present long-lasting and serious consequences.
The 2022 edition of ICD-10-CM I61. 9 became effective on October 1, 2021. This is the American ICD-10-CM version of I61.
The thalamus is a small structure within the brain located just above the brain stem between the cerebral cortex and the midbrain and has extensive nerve connections to both. The primary function of the thalamus is to relay motor and sensory signals to the cerebral cortex.
Where is the thalamus located? Your thalamus lies above your brainstem in the middle of your brain. Although it may look like a single structure, you actually have two, side-by-side thalami, one in each hemisphere (side) of your brain.
The case definition of using the ICD-10-CM code of I60 or I61 as the primary diagnosis to identify acute hemorrhagic stroke yielded a PPV and sensitivity of 98.2% and 93.1%, respectively.
For ischaemic stroke, the main codes are ICD-8 433/434 and ICD-9 434 (occlusion of the cerebral arteries), and ICD-10 I63 (cerebral infarction). Stroke is a heterogeneous disease that is not defined consistently by clinicians or researchers [35].
I63. 9 - Cerebral infarction, unspecified | ICD-10-CM.