2026 ICD-10-CM Diagnosis Code I97.190Other postprocedural cardiac functional disturbances following cardiac surgery

ICD-10-CM Codes›I00–I99›I95-I99›I97

ICD-10-CM I97.190
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

I97.190 is a billable ICD-10-CM diagnosis code for other postprocedural cardiac functional disturbances following cardiac surgery. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 314 through 316. Coders also document this condition as incisional tachycardia. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Postprocedural or postoperative circulatory system complication.

Code Identity

ICD-10-CM Code
I97.190
Billable Status
Yes — Valid for Submission
Code Describes
Other postprocedural cardiac functional disturbances following cardiac surgery
Short Description
Oth postproc cardiac functn disturb fol cardiac surgery
Parent Code
I97.19
Other postprocedural cardiac functional disturbances

Code Classification

ChapterI00–I99Diseases of the circulatory system
SectionI95-I99Other and unspecified disorders of the circulatory system
CategoryI97Intraoperative and postprocedural complications and disorders of circulatory system, not elsewhere classified
This CodeI97.190Other postprocedural cardiac functional disturbances following cardiac surgery

Approximate SynonymsGuidance

Alternate terms and clinical phrases that map to this code.

  • Incisional tachycardia
  • Left atrial incisional tachycardia
  • Post cardiac operation functional disturbance
  • Spontaneous closure of surgically created fenestration of interatrial septum after prior atrial fenestration operation

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Use Additional Code

  • code, if applicable, for type 4 or type 5 myocardial infarction, to further specify disorder

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)
      • circulatory system
        • postprocedural
          • following cardiac surgery
    • Complication(s) (from) (of)
      • postprocedural
        • cardiac functional disturbance NEC
          • following cardiac surgery
    • Disturbance(s)
      • heart, functional (conditions in I44-I50)
        • postoperative
          • cardiac surgery
    • Infarct, infarction
      • myocardium, myocardial (acute) (with stated duration of 4 weeks or less)
        • postprocedural
          • following cardiac surgery

Clinical ClassificationClinical

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

CCSR CIR038
Postprocedural or postoperative circulatory system complication
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert I97.190 to ICD-9-CMHistory

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

ICD-9-CM
429.4 Hrt dis postcardiac surg
Approximate The match is approximate rather than exact.
ICD-9-CM
997.1 Surg compl-heart
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.
ICD-9-CM
429.4 Hrt dis postcardiac surg
ApproximateCombination The match is approximate, and more than one code can be needed to describe the source diagnosis. Confirm with contextual judgment.

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 I97.190Overview

Is I97.190 (Other postprocedural cardiac functional disturbances) a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report other postprocedural cardiac functional disturbances following cardiac surgery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

What MS-DRG does I97.190 group to?

When other postprocedural cardiac functional disturbances following cardiac surgery is the principal diagnosis on an inpatient stay, it groups to MS-DRG 314, 315, 316, with relative weights from 0.6821 to 2.0852 depending on complications. Higher weights mean higher Medicare reimbursement.

What is the ICD-9 equivalent of I97.190?

Under the General Equivalence Mappings, other postprocedural cardiac functional disturbances following cardiac surgery converts to ICD-9-CM 429.4 (hrt dis postcardiac surg), 997.1 (surg compl-heart), and 429.4 (hrt dis postcardiac surg). 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.