I97.811
Intraoperative cerebrovascular infarction during other surgery
I97.811 (also written I97811) is a billable ICD-10-CM diagnosis code for intraoperative cerebrovascular infarction during other surgery. It is part of the FY2027 code set, effective October 1, 2026. It is one of the 39 codes in category I97 (Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified). The Alphabetic Index lists it under 2 entries. Its coding notes include a Use additional code instruction and 11 Excludes2 entries.
Guidelines tips
From the FY2027 Official Guidelines. ICD10Ref adds no rules of its own.
Intraoperative and postprocedural complications are coded from the body system chapters unless the complication is specifically indexed to a T code.
Code assignment depends on whether it was an infarction or a hemorrhage and whether it occurred during or after the procedure.
Use additional code
Add the listed code as a secondary code, if known.
- code, if applicable, to further specify disorder
Excludes2
Not included here. Both codes may be reported if the patient has both conditions.
- postprocedural shock (T81.1-)
Also from chapter/block level (10 notes)
- certain conditions originating in the perinatal period (P04-P96)
- certain infectious and parasitic diseases (A00-B99)
- complications of pregnancy, childbirth and the puerperium (O00-O9A)
- congenital malformations, deformations, and chromosomal abnormalities (Q00-Q99)
- endocrine, nutritional and metabolic diseases (E00-E88)
- injury, poisoning and certain other consequences of external causes (S00-T88)
- neoplasms (C00-D49)
- symptoms, signs and abnormal clinical and laboratory findings, not elsewhere classified (R00-R94)
- systemic connective tissue disorders (M30-M36)
- transient cerebral ischemic attacks and related syndromes (G45.-)
Care settings
How CMS programs treat this code. These are CMS claim edits and list entries, not coverage or eligibility rules.
Home Health Primary
Accepted as the primary (principal) diagnosis on a home health claim. The Home Health Grouper assigns it to the MMTA - Cardiac and Circulatory clinical group.
Source: CMS Home Health Grouper Software v07.2.26, effective October 1, 2026IRF 60% Rule
On the CMS list of diagnoses used to determine presumptive compliance with the IRF 60 percent rule.
Source: CMS IRF Presumptive Compliance-3, FY 2027 IRF PPS final rule files, effective for discharges on or after October 1, 2026Hospital CC
Counts as a complication or comorbidity (CC) when reported as a secondary diagnosis on an inpatient claim. It does not count when the principal diagnosis is one of the 60 codes in its exclusion list. Some MS-DRGs also ignore a CC or MCC that defines the DRG.
Source: CMS MS-DRG Definitions Manual v44, effective October 1, 2026, Appendix CAlphabetic Index terms
Terms the official Alphabetic Index lists for this code. 2 entries