2026 ICD-10-CM Diagnosis Code T82.191SOther mechanical complication of cardiac pulse generator (battery), sequela
T82.191S is a billable ICD-10-CM diagnosis code for other mechanical complication of cardiac pulse generator (battery), sequela. The 7th character S marks it as a sequela code, which reports a problem that remains after the original condition has resolved. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 922 through 923. The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication, sequela.
Code Identity
Code Classification
Present on Admission (POA)Billing
T82.191S is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cardiac pacemaker battery malfunction
- Cardiac pacemaker electrical interference
- Cardiac pacemaker sensitivity problem
- Cross-talk in dual chamber cardiac pacemaker
- Disorder of pacing function
- Electro-mechanical dissociation caused by cardiac pacemaker
- Malfunction from artificial pacing
- Malfunction of cardiac pacemaker
- Oversensing cardiac pacemaker
- Rhythm from artificial pacing
Coding GuidelinesGuidance
The appropriate 7th character is to be added to each code from block Complications of cardiac and vascular prosthetic devices, implants and grafts (T82). Use the following options for the applicable episode of care:
- A - initial encounter
- D - subsequent encounter
- S - sequela
Source: ICD-10-CM Official Guidelines for Coding and Reporting, FY 2026, published by CMS and the National Center for Health Statistics.
Clinical ClassificationClinical
AHRQ’s CCSR groups this code into broader clinical categories.
Patient EducationClinical
Pacemakers and Implantable Defibrillators
An arrhythmia is any disorder of your heart rate or rhythm. It means that your heart beats too quickly, too slowly, or with an irregular pattern. Most arrhythmias result from problems in the electrical system of the heart. If your arrhythmia is serious, you may need a cardiac pacemaker or an implantable cardioverter defibrillator (ICD).
Read the full article at MedlinePlus
Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.
Convert T82.191S to ICD-9-CMHistory
The closest ICD-9-CM equivalents under the General Equivalence Mappings.
Code HistoryHistory
Questions About T82.191SOverview
Is T82.191S a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report other mechanical complication of cardiac pulse generator (battery), sequela on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character S in T82.191S mean?
The final character S makes this a sequela code: it reports a lingering problem that remains after the other mechanical complication of cardiac pulse generator (battery) itself has resolved, not the original event.
What MS-DRG does T82.191S group to?
When other mechanical complication of cardiac pulse generator (battery), sequela is the principal diagnosis on an inpatient stay, it groups to MS-DRG 922, 923, with relative weights from 1.0177 to 1.7494 depending on complications. Higher weights mean higher Medicare reimbursement.
Is T82.191S exempt from POA reporting?
Yes. CMS lists this code among those exempt from present on admission reporting, so hospitals do not assign a POA indicator for other mechanical complication of cardiac pulse generator (battery), sequela on inpatient claims.
What is the ICD-9 equivalent of T82.191S?
Under the General Equivalence Mappings, other mechanical complication of cardiac pulse generator (battery), sequela converts to ICD-9-CM 909.3 (late eff surg/med compl). The mapping is approximate, so confirm the match fits the documentation.
