2026 ICD-10-CM Diagnosis Code I97.191Other postprocedural cardiac functional disturbances following other surgery
ICD-10-CM Codes›I00–I99›I95-I99›I97
- Billable — Valid for Submission
- CC — Complication or Comorbidity
- Not Chronic
I97.191 is a billable ICD-10-CM diagnosis code for other postprocedural cardiac functional disturbances following other 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. 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.
- Acquired complete atrioventricular block
- Complete atrioventricular block
- Finding related to awareness of heart beat
- Fluttering heart
- His bundle tachycardia
- Junctional ectopic tachycardia
- Palpitations
- Postoperative acute myocardial infarction
- Postoperative atrioventricular block
- Postoperative cardiac arrhythmia
- Postoperative complete heart block
- Postoperative fluttering heart
- Postoperative His bundle tachycardia
- Postoperative junctional ectopic tachycardia
- Postoperative myocardial infarction
- Postoperative sinus node dysfunction
- Postoperative transmural myocardial infarction of anterior wall
- Postoperative transmural myocardial infarction of inferior wall
- Recurrent interatrial communication after prior cardiovascular surgical procedure
Index to Diseases and InjuriesGuidance
Alphabetical index entries that point to this code.
postprocedural See Also: Complications, surgical procedure;
cardiac functional disturbance NEC See Also: Infarct, myocardium, associated with revascularization procedure;
following other surgery I97.191
Disturbance (s) See Also: Disease;
myocardium, myocardial (acute) (with stated duration of 4 weeks or less) I21.9
postprocedural See Also: Infarct, myocardium, associated with revascularization procedure;
following other surgery I97.191
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Clinical InformationClinical
Congenital Bundle of His Tachycardia|Congenital His Bundle Tachycardia|Junctional Ectopic Tachycardia, Congenital
a congenital disorder characterized by an electrocardiographic finding of tachycardia that affects neonates and infants. it results from an increased automaticity in the atrioventricular node and his bundle.Junctional Ectopic Tachycardia
a tachycardia originating in or adjacent to the av junction.
Convert I97.191 to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About I97.191Overview
Is I97.191 (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 other surgery on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What MS-DRG does I97.191 group to?
When other postprocedural cardiac functional disturbances following other 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 I97.191 a CC or MCC?
CMS lists I97.191 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 I97.191?
Under the General Equivalence Mappings, other postprocedural cardiac functional disturbances following other 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.
