ICD-10-CM 2027
ICD-10 code for Raymond syndrome
From the official ICD-10-CM alphabetic index entry “Raymond (-Céstan) syndrome”. Page updated September 29, 2026.
About coding Raymond syndrome
The ICD-10-CM code for Raymond syndrome is I65.8 (Occlusion and stenosis of other precerebral arteries).
Within I65, choose I65.8 (other precerebral arteries) only when documentation doesn't support a more specific option: vertebral artery (I65.0), basilar artery (I65.1), carotid artery (I65.2) and unspecified precerebral artery (I65.9).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 061 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with MCC, relative weight 2.7211), DRG 062 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with CC, relative weight 1.7781), DRG 063 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent without CC/MCC, relative weight 1.455), DRG 067 (Precerebral Occlusion without Infarction with MCC, relative weight 1.4274) and DRG 068 (Precerebral Occlusion without Infarction without MCC, relative weight 0.9013), in MDC 01 (Diseases and Disorders of the Nervous System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about Raymond syndrome ICD-10 codes
What is the ICD-10 code for Raymond syndrome?
- I65.8 — Occlusion and stenosis of other precerebral arteries.
Is I65.8 billable?
- Yes. I65.8 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I65.8 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I65.8 as a principal diagnosis.
Is I65.8 a CC or MCC?
- No. I65.8 is neither a CC nor an MCC under MS-DRG v44.0.