Z45.010 ICD-10-CM Code: Encounter for checking and testing of cardiac pacemaker pulse generator [battery]
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FY 2026 Apr update / Factors influencing health status and contact with health services (Z00-Z99) / Encounters for other specific health care (Z40-Z53)
Z45.010
Billable / SpecificICD-10-CMOfficial ICD-10-CMCodebook guidanceEncounter for checking and testing of cardiac pacemaker pulse generator [battery]
A patient visit to check and test the battery of an implanted heart pacemaker to ensure it is functioning properly.
CMS-HCC V28
N/A—
Not mapped
CMS-HCC V24
N/A—
Not mapped
ACA/HHS
N/A—
Not mapped
ESRD/PACE
N/A—
Not mapped
RXHCC
N/A—
Not mapped
Code Book Path
Inclusion Terms
Official- Encounter for replacing cardiac pacemaker pulse generator [battery]
Excludes 2
OfficialICD-10-CM does not list Excludes 2 notes for Z45.010 in this effective period.
Related Child Codes
Includes
OfficialICD-10-CM does not list Includes notes for Z45.010 in this effective period.
Excludes 1
Official- encounter for adjustment and management of automatic implantable cardiac defibrillator with synchronous cardiac pacemaker (Z45.02)
Code First
OfficialICD-10-CM does not list Code First sequencing instructions for Z45.010 in this effective period.
Use Additional
OfficialICD-10-CM does not list Use Additional Code instructions for Z45.010 in this effective period.
Code Also
OfficialICD-10-CM does not list Code Also instructions for Z45.010 in this effective period.
Buddy Documentation Tip
Current with CMS: FY2026 ICD-10-CM Apr 1 update (effective Apr 1 – Sep 30, 2026) · CMS-HCC V28, 100% phased in for payment year 2026. FY2027 code set already staged for October 1, 2026. How HCC Buddy stays current →
Is Z45.010 an HCC code?
No. Z45.010 is a billable ICD-10-CM code but does not map to any HCC category in V28, V24, ESRD, or RxHCC.
- Code
- Z45.010
- Description
- Encounter for checking and testing of cardiac pacemaker pulse generator [battery]
- HCC (V28)
- No CMS-HCC V28 mapping
- RAF
- —
- Billable
- Yes
- Payment year
- 2026
Coder workflow notes
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This code does not map to an HCC category in any model (V28, V24, ESRD, RxHCC).
What This Code Means
Z45.010 is the ICD-10-CM diagnosis code for encounter for checking and testing of cardiac pacemaker pulse generator [battery]. A patient visit to check and test the battery of an implanted heart pacemaker to ensure it is functioning properly. Z45.010 sits in the ICD-10-CM chapter for factors influencing health status and contact with health services (z00-z99), within the section covering encounters for other specific health care (z40-z53).
Z45.010 is a billable ICD-10-CM code but does not map to a payment HCC under the CMS-HCC V28, V24, ESRD, or RxHCC risk adjustment models. It can be reported on Medicare Advantage encounter data submissions but it does not contribute to a beneficiary's RAF score and therefore does not affect risk-adjusted payments to the plan.
This code is used specifically for battery checks and testing, not for other pacemaker adjustments.
HCC Buddy maintains structured V28 and V24 mapping, RAF weights, and MEAT documentation criteria for Z45.010 sourced directly from the CMS-HCC risk adjustment model files and the CMS ICD-10-CM code set.
Coding Tips
- •This code is used specifically for battery checks and testing, not for other pacemaker adjustments
- •This is a Z code (encounter code), so it should be the primary diagnosis when the visit is solely for this purpose