2026 ICD-10-CM Diagnosis Code Z45.42Encounter for adjustment and management of neurostimulator

ICD-10-CM Codes›Z00–Z99›Z40-Z53›Z45

ICD-10-CM Z45.42
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z45.42 is a billable ICD-10-CM diagnosis code for encounter for adjustment and management of neurostimulator. It is valid on HIPAA claims for fiscal year 2026 (October 1, 2025 through September 30, 2026). The code is exempt from POA reporting. In AHRQ's Clinical Classifications Software (CCSR), this diagnosis falls under Implant, device or graft related encounter.

Code Identity

ICD-10-CM Code
Z45.42
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for adjustment and management of neurostimulator
Short Description
Encounter for adjustment and management of neurostimulator
Same as the full description in the CMS dataset.
Parent Code
Z45.4
Encounter for adjustment and management of implanted nervous system device

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ40-Z53Encounters for other specific health care
CategoryZ45Encounter for adjustment and management of implanted device
This CodeZ45.42Encounter for adjustment and management of neurostimulator

Present on Admission (POA)Billing

Z45.42 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Inclusion Terms

  • Encounter for adjustment and management of brain neurostimulator
  • Encounter for adjustment and management of gastric neurostimulator
  • Encounter for adjustment and management of peripheral nerve neurostimulator
  • Encounter for adjustment and management of sacral nerve neurostimulator
  • Encounter for adjustment and management of spinal cord neurostimulator
  • Encounter for adjustment and management of vagus nerve neurostimulator

Index to Diseases and InjuriesGuidance

Alphabetical index entries that point to this code.

External Cause of Injuries IndexGuidance

References for this code in the External Cause of Injuries Index.

    • Admission(for)
      • adjustment (of)
        • brain neuropacemaker
          • implanted
    • Admission(for)
      • adjustment (of)
        • device NEC
          • implanted
            • nervous system
              • neuropacemaker
    • Admission(for)
      • adjustment (of)
        • neuropacemaker (brain) (peripheral nerve) (spinal cord)
          • implanted
    • Admission(for)
      • adjustment (of)
        • pacemaker (cardiac resynchronization therapy (CRT-P))
          • nervous system
            • implanted
    • Admission(for)
      • change of
        • neuropacemaker device (brain) (peripheral nerve) (spinal cord)
          • implanted
    • Admission(for)
      • fitting (of)
        • brain neuropacemaker
          • implanted
    • Admission(for)
      • fitting (of)
        • neuropacemaker (brain) (peripheral nerve) (spinal cord)
          • implanted
    • Admission(for)
      • removal of
        • neuropacemaker (brain) (peripheral nerve) (spinal cord)
          • implanted
    • Aftercare
      • neuropacemaker (brain) (peripheral nerve) (spinal cord)
        • implanted
    • Encounter(with health service) (for)
      • adjustment and management (of)
        • neurostimulator (brain) (gastric) (peripheral nerve) (sacral nerve) (spinal cord) (vagus nerve)
    • Fitting(and adjustment) (of)
      • brain neuropacemaker
        • implanted
    • Fitting(and adjustment) (of)
      • neuropacemaker
        • implanted
    • Fitting(and adjustment) (of)
      • pacemaker (cardiac) (cardiac resynchronization therapy (CRT-P))
        • nervous system (brain) (peripheral nerve) (spinal cord)
          • implanted

Clinical ClassificationClinical

AHRQ’s CCSR groups this code into broader clinical categories.

CCSR FAC009
Implant, device or graft related encounter
Default principal diagnosis: inpatient Yes · outpatient Yes

Convert Z45.42 to ICD-9-CMHistory

The closest ICD-9-CM equivalents under the General Equivalence Mappings.

ICD-9-CM
V53.02 Adjust neuropacemaker
Exact Match The mapping is direct, with no qualifiers.

Code HistoryHistory

FY 2016AddedAdded to the ICD-10-CM code setEffective October 1, 2015, the first year of ICD-10-CM.
FY 2017–2025No changes
FY 2026CurrentCurrent code set, no changesEffective October 1, 2025 through September 30, 2026.

Questions About Z45.42Overview

Is Z45.42 a billable code?

Yes. This is a billable ICD-10-CM code, specific enough to report encounter for adjustment and management of neurostimulator on HIPAA-covered claims from October 1, 2025 through September 30, 2026.

Is Z45.42 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 encounter for adjustment and management of neurostimulator on inpatient claims.

What is the ICD-9 equivalent of Z45.42?

Under the General Equivalence Mappings, encounter for adjustment and management of neurostimulator converts to ICD-9-CM V53.02 (adjust neuropacemaker). The mapping is a direct match.