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ICD-10-CM 2027 diagnosis code

I63.413Cerebral infarction due to embolism of bilateral middle cerebral arteries

✓ Billable / specificMCC — major complication/comorbidity

I63.413 is a valid, billable ICD-10-CM code for cerebral infarction due to embolism of bilateral middle cerebral arteries. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Cerebral infrc due to embolism of bi middle cerebral art

Code last changed in FY2017 (effective October 1, 2016). Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I63.413

I63.413 is the ICD-10-CM diagnosis code for cerebral infarction due to embolism of bilateral middle cerebral arteries. It belongs to category I63 (cerebral infarction), block I60-I69 (cerebrovascular diseases) and chapter 9 (diseases of the circulatory system). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within I63.41 (cerebral infarction due to embolism of middle cerebral artery), I63.413 is specifically for cerebral infarction due to embolism of bilateral middle cerebral arteries. Related codes cover right middle cerebral artery (I63.411), left middle cerebral artery (I63.412) and unspecified middle cerebral artery (I63.419).

Use an additional code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82). Use an additional code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-).

As a secondary diagnosis it is an MCC (major complication or comorbidity), which can move an inpatient stay into the highest-paying "with MCC" MS-DRG of its family, unless the principal diagnosis excludes it.

In MS-DRG v44.0, it is part of the grouping logic for DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator, relative weight 5.7444), DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC, relative weight 3.9708), 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 064 (Intracranial Hemorrhage or Cerebral Infarction with MCC, relative weight 1.9712) and 4 more, in MDC 01 (Diseases and Disorders of the Nervous System) and MDC 15 (Newborns and Other Neonates with Conditions Originating in the Perinatal Period), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It was added in FY2017, effective October 1, 2016.

Before ICD-10, this condition was coded in ICD-9-CM as 434.11 (cerebral embolism with cerebral infarction).

Notes that apply from higher levels

Instructions written at a parent level also apply to I63.413.

› From I63 Cerebral infarction
Includes
  • occlusion and stenosis of cerebral and precerebral arteries, resulting in cerebral infarction
Excludes1
  • neonatal cerebral infarction (P91.82-)
Excludes2
  • chronic, without residual deficits (sequelae) (Z86.73)
  • sequelae of cerebral infarction (I69.3-)
Use additional code
  • code, if applicable, to identify status post administration of tPA (rtPA) in a different facility within the last 24 hours prior to admission to current facility (Z92.82)
  • code, if known, to indicate National Institutes of Health Stroke Scale (NIHSS) score (R29.7-)

Broader instructions also apply from I60-I69 Cerebrovascular diseases and Chapter 9: Diseases of the circulatory system.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

MDC 15 · Newborns and Other Neonates with Conditions Originating in the Perinatal Period

ICD-9-CM equivalent

Converter →
  • 434.11Cerebral embolism with cerebral infarctionapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2017 (effective 10/1/2016): Added
  • No changes since FY2017.

Common questions about I63.413

Is I63.413 billable?

Yes. I63.413 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I63.413 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I63.413 as a principal diagnosis.

Is I63.413 a CC or MCC?

I63.413 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does I63.413 group to?

I63.413 is used in the MS-DRG v44.0 logic for MS-DRG 023 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis with MCC or Antineoplastic Implant or Epilepsy with Neurostimulator), MS-DRG 024 (Craniotomy with Major Device Implant or Acute Complex CNS Principal Diagnosis without MCC), MS-DRG 061 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with MCC), MS-DRG 062 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent with CC), MS-DRG 063 (Ischemic Stroke, Precerebral Occlusion or Transient Ischemia with Thrombolytic Agent without CC/MCC), MS-DRG 064 (Intracranial Hemorrhage or Cerebral Infarction with MCC) and 4 more. Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for I63.413?

The CMS General Equivalence Mappings map I63.413 to ICD-9-CM 434.11.