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ICD-10-CM 2027 diagnosis code

I60.02Nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation

✓ Billable / specificMCC — major complication/comorbidity

I60.02 is a valid, billable ICD-10-CM code for nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Ntrm subarach hemorrhage from left carotid siphon and bifurc

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About I60.02

I60.02 is the ICD-10-CM diagnosis code for nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation. It belongs to category I60 (nontraumatic subarachnoid hemorrhage), 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 I60.0 (nontraumatic subarachnoid hemorrhage from carotid siphon and bifurcation), I60.02 is specifically for nontraumatic subarachnoid hemorrhage from left carotid siphon and bifurcation. Related codes cover unspecified carotid siphon and bifurcation (I60.00) and right carotid siphon and bifurcation (I60.01).

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 020 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with MCC, relative weight 7.9629), DRG 021 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with CC, relative weight 5.4726), DRG 022 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage without CC/MCC, relative weight 3.3534), 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 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 has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as 430 (subarachnoid hemorrhage).

Notes that apply from higher levels

Instructions written at a parent level also apply to I60.02.

› From I60 Nontraumatic subarachnoid hemorrhage
Excludes1
  • syphilitic ruptured cerebral aneurysm (A52.05)
Excludes2
  • sequelae of subarachnoid hemorrhage (I69.0-)
Use additional code
  • 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 →
  • 430Subarachnoid hemorrhageapproximate

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
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about I60.02

Is I60.02 billable?

Yes. I60.02 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can I60.02 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict I60.02 as a principal diagnosis.

Is I60.02 a CC or MCC?

I60.02 is an MCC (major complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.

What DRG does I60.02 group to?

I60.02 is used in the MS-DRG v44.0 logic for MS-DRG 020 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with MCC), MS-DRG 021 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage with CC), MS-DRG 022 (Intracranial Vascular Procedures with Principal Diagnosis Hemorrhage without CC/MCC), 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 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 I60.02?

The CMS General Equivalence Mappings map I60.02 to ICD-9-CM 430.