ICD-10-CM 2027 diagnosis code
I97.810Intraoperative cerebrovascular infarction during cardiac surgery
I97.810 is a valid, billable ICD-10-CM code for intraoperative cerebrovascular infarction during cardiac surgery. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Intraoperative cerebvasc infarction during cardiac surgery
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 I97.810
I97.810 is the ICD-10-CM diagnosis code for intraoperative cerebrovascular infarction during cardiac surgery. It belongs to category I97 (intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified), block I95-I99 (other and unspecified disorders of the circulatory system) 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 I97.81 (intraoperative cerebrovascular infarction), I97.810 is specifically for intraoperative cerebrovascular infarction during cardiac surgery. Related codes cover during other surgery (I97.811).
As a secondary diagnosis it is a CC (complication or comorbidity), which can move an inpatient stay into the "with CC" 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 091 (Other Disorders of Nervous System with MCC, relative weight 1.7046), DRG 092 (Other Disorders of Nervous System with CC, relative weight 1.0239) and DRG 093 (Other Disorders of Nervous System without CC/MCC, relative weight 0.7783), 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.
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 997.02 (iatrogenic cerebrovascular infarction or hemorrhage).
Notes that apply from higher levels
Instructions written at a parent level also apply to I97.810.
› From I97.8 Other intraoperative and postprocedural complications and disorders of the circulatory system, not elsewhere classified
- code, if applicable, to further specify disorder
› From I97 Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified
- postprocedural shock (T81.1-)
Broader instructions also apply from Chapter 9: Diseases of the circulatory system.
Alphabetic index entries
2 entriesTerms in the official ICD-10-CM index that lead to I97.810.
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 01 · Diseases and Disorders of the Nervous System
ICD-9-CM equivalent
Converter →- 997.02Iatrogenic cerebrovascular infarction or hemorrhageapproximate
From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.
Code history
- 2016
- 2017
- 2018
- 2019
- 2020
- 2021
- 2022
- 2023
- 2024
- 2025
- 2026
- 2027
- FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
- No changes since FY2016.
Common questions about I97.810
Is I97.810 billable?
- Yes. I97.810 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can I97.810 be used as a principal diagnosis?
- Yes. The Medicare Code Editor doesn't restrict I97.810 as a principal diagnosis.
Is I97.810 a CC or MCC?
- I97.810 is a CC (complication or comorbidity) under MS-DRG v44.0, unless excluded by the principal diagnosis.
What DRG does I97.810 group to?
- I97.810 is used in the MS-DRG v44.0 logic for MS-DRG 091 (Other Disorders of Nervous System with MCC), MS-DRG 092 (Other Disorders of Nervous System with CC) and MS-DRG 093 (Other Disorders of Nervous System without CC/MCC). 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 I97.810?
- The CMS General Equivalence Mappings map I97.810 to ICD-9-CM 997.02.