I97.821 Postprocedural cerebrovascular infarction following other surgery

Billable ICD-10-CM code, FY2026. Acts as a Complication or Comorbidity (CC) as a secondary diagnosis.

Applies from I97 Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified

Excludes2 (not included here)

• postprocedural shock (T81.1-)

Applies from I97.8 Other intraoperative and postprocedural complications and disorders of the circulatory system, not elsewhere classified

Use additional code

• code, if applicable, to further specify disorder

Risk adjustment (HCC)

• CMS-HCC V22: HCC 100 — Ischemic or Unspecified Stroke
• ESRD V24: HCC 100

MS-DRG index

Defines the logic of DRG(s) 091-093 in MDC 01.

Approximate ICD-9-CM (GEMs)

• 997.02 Iatrogenic cerebrovascular infarction or hemorrhage (approximate)

Code annotations containing back-references to I97.821

Back-references to I97.82

• Type 2 Excludes: G97 Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified ("intraoperative and postprocedural cerebrovascular infarction (I97.81-, I97.82-)")

Diagnosis Index entries for I97.821

• Infarct, infarction › cerebral (acute) › postprocedural › following other surgery
• Stroke (apoplectic) (brain) (ischemic) (paralytic) › postprocedural › following other surgery

Nearby codes

• I97.81 Intraoperative cerebrovascular infarction
• I97.810 Intraoperative cerebrovascular infarction during cardiac surgery
• I97.811 Intraoperative cerebrovascular infarction during other surgery
• I97.82 Postprocedural cerebrovascular infarction
• I97.820 Postprocedural cerebrovascular infarction following cardiac surgery
• I97.821 Postprocedural cerebrovascular infarction following other surgery (this code)
• I97.88 Other intraoperative complications of the circulatory system, not elsewhere classified
• I97.89 Other postprocedural complications and disorders of the circulatory system, not elsewhere classified