2026 ICD-10-CM Diagnosis Code T82.111ABreakdown (mechanical) of cardiac pulse generator (battery), initial encounter
T82.111A is a billable ICD-10-CM diagnosis code for breakdown (mechanical) of cardiac pulse generator (battery), initial encounter. The 7th character A marks it as an initial encounter code, used while the patient is receiving active treatment. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026) and groups to MS-DRG 308 through 310. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Complication of cardiovascular device, implant or graft, initial encounter.
Code Identity
Code Classification
Approximate SynonymsGuidance
Alternate terms and clinical phrases that map to this code.
- Cardiac arrest due to pacemaker failure
- Cardiac pacemaker battery malfunction
- Disorder of pacemaker pulse generator
- Failure of cardiac pacemaker to capture
- Malfunction of biventricular cardiac pacemaker
- Malfunction of biventricular cardiac pacemaker battery
- Malfunction of cardiac pacemaker
- Pacemaker battery depletion
- Pacemaker pulse generator failure
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.
Clinical InformationClinical
Failure of Cardiac Pacemaker to Capture
failure to capture manifests as a high pacing threshold that results in either intermittent failure to capture at maximal programmed output or excessive battery drain leading to premature battery exhaustion.
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
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Convert T82.111A to ICD-9-CMHistory
Code HistoryHistory
Questions About T82.111AOverview
Is T82.111A (Breakdown (mechanical) of cardiac pulse generator (battery)) a billable code?
Yes. This is a billable ICD-10-CM code, specific enough to report breakdown (mechanical) of cardiac pulse generator (battery), initial encounter on HIPAA-covered claims from October 1, 2025 through September 30, 2026.
What does the 7th character A in T82.111A mean?
The final character A marks the initial encounter: use it while the patient is receiving active treatment for breakdown (mechanical) of cardiac pulse generator (battery), such as an emergency visit or first evaluation.
What MS-DRG does T82.111A group to?
When breakdown (mechanical) of cardiac pulse generator (battery), initial encounter is the principal diagnosis on an inpatient stay, it groups to MS-DRG 308, 309, 310, with relative weights from 0.5661 to 1.2040 depending on complications. Higher weights mean higher Medicare reimbursement.
What is the ICD-9 equivalent of T82.111A?
Under the General Equivalence Mappings, breakdown (mechanical) of cardiac pulse generator (battery), initial encounter converts to ICD-9-CM 996.01 (malfunc cardiac pacemake) and 996.04 (mch cmp autm mplnt dfbrl). The mapping is approximate, so confirm the match fits the documentation.
