2026 ICD-10-CM Diagnosis Code G97.31Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure

ICD-10-CM Codes›G00–G99›G89-G99›G97

ICD-10-CM G97.31
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

G97.31 is a billable ICD-10-CM diagnosis code for intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative nervous system complication.

Code Identity

ICD-10-CM Code
G97.31
Billable Status
Yes — Valid for Submission
Code Describes
Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure
Short Description
Intraop hemor/hemtom of a nervous sys org comp nrv sys proc
Parent Code
G97.3
Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a procedure

Code Classification

ChapterG00–G99Diseases of the nervous system
SectionG89-G99Other disorders of the nervous system
CategoryG97Intraoperative and postprocedural complications and disorders of nervous system, not elsewhere classified
This CodeG97.31Intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Complication(s) (from) (of)
      • intraoperative (intraprocedural)
        • hemorrhage (hematoma) (of)
          • nervous system
            • during a nervous system procedure
    • Hemorrhage, hemorrhagic(concealed)
      • intracranial (nontraumatic)
        • intracerebral (nontraumatic) (in)
          • intraoperative
            • during a nervous system procedure

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR NVS021
Postprocedural or postoperative nervous system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert G97.31 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
997.02 Iatrogen CV infarc/hmrhg
Approximate The match is approximate rather than exact.
ICD-9-CM
998.11 Hemorrhage complic proc
Approximate The match is approximate rather than exact.
ICD-9-CM
998.12 Hematoma complic proc
Approximate The match is approximate rather than exact.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About G97.31Overview

Is G97.31 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What is the ICD-9 equivalent of G97.31?

Under the General Equivalence Mappings, intraoperative hemorrhage and hematoma of a nervous system organ or structure complicating a nervous system procedure converts to ICD-9-CM 997.02 (iatrogen CV infarc/hmrhg), 998.11 (hemorrhage complic proc), and 998.12 (hematoma complic proc). The mapping is approximate, so confirm the match fits the documentation.

Footnotes

[1] Not chronic - A diagnosis code that does not fit the criteria for chronic condition (duration, ongoing medical treatment, and limitations) is considered not chronic. Some codes designated as not chronic are acute conditions. Other diagnosis codes that indicate a possible chronic condition, but for which the duration of the illness is not specified in the code description (i.e., we do not know the condition has lasted 12 months or longer) also are considered not chronic.