2026 ICD-10-CM Diagnosis Code I97.190Other postprocedural cardiac functional disturbances following cardiac surgery
ICD-10-CM Codes›I00–I99›I95-I99›I97
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
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, 791, 793. As a secondary diagnosis, it counts as a complication or comorbidity (CC) and moves an inpatient stay to a higher severity level within its MS-DRG family. It does not count, however, when the principal diagnosis is one of 60 closely related codes. 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
Code Classification
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
The “use additional code” indicates that a secondary code could be used to further specify the patient’s condition. This note is not mandatory and is only used if enough information is available to assign an additional code.
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
following cardiac surgery See Also: Infarct, myocardium, associated with revascularization procedure; I97.190
postprocedural See Also: Complications, surgical procedure;
cardiac functional disturbance NEC See Also: Infarct, myocardium, associated with revascularization procedure;
following cardiac surgery I97.190
Disturbance (s) See Also: Disease;
heart, functional (conditions in I44-I50)
cardiac surgery See Also: Infarct, myocardium, associated with revascularization procedure; I97.190
myocardium, myocardial (acute) (with stated duration of 4 weeks or less) I21.9
postprocedural See Also: Infarct, myocardium, associated with revascularization procedure;
following cardiac surgery See Also: Infarct, myocardium, type 4 or type 5; I97.190
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Convert I97.190 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
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, 791, 793, with relative weights from 0.6821 to 4.1696 depending on complications. Higher weights mean higher Medicare reimbursement.
Is I97.190 a CC or MCC?
CMS lists I97.190 as a CC (complication or comorbidity) for FY 2026. Reported as a secondary diagnosis, it moves the inpatient stay to a higher-weighted DRG within its severity family. It does not count when the principal diagnosis is one of the 60 closely related codes in its exclusion list.
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.
