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ICD-10/Z45.42

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

Billing Status: YES. This is a valid, specific, and billable ICD-10-CM reference.

Inpatient Payment Groups (MS-DRG)

MS-DRGs this diagnosis helps define, as principal or secondary, per the CMS ICD-10-CM/PCS MS-DRG Definitions Manual v43.0, Appendix B.

  • MS-DRG 091 — OTHER DISORDERS OF NERVOUS SYSTEM WITH MCC (MDC 01)
  • MS-DRG 092 — OTHER DISORDERS OF NERVOUS SYSTEM WITH CC (MDC 01)
  • MS-DRG 093 — OTHER DISORDERS OF NERVOUS SYSTEM WITHOUT CC/MCC (MDC 01)

A diagnosis appearing in a group's logic does not by itself determine the DRG assigned to a stay; the grouper uses the full claim.

Official Registry Overview & Definition

Encounter for adjustment and management of neurostimulator is a billable ICD-10-CM diagnosis code (Z45.42).

Official Tabular Instructional Notes

Sequencing, inclusion, and exclusion notes published for Z45.42 in the official ICD-10-CM tabular list.

Includes

Conditions the official ICD-10-CM tabular list includes under this code.

  • removal or replacement of implanted device

Inclusion Terms

Alternative terms the tabular list files under this code.

  • 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

Excludes1 — Not Coded Here

Conditions generally not reported together with this code (Excludes1) -- an error unless the two conditions are documented as unrelated to each other (ICD-10-CM Official Guidelines, Section I.A.12.a).

  • malfunction or other complications of device - see Alphabetical Index

Excludes2 — Not Included Here

Conditions not covered by this code, but which may be reported alongside it when both are present.

Change history

  • FY2020 — 2019-10-01
    Description revised
    Encounter for adjustment and management of neuropacemaker (brain) (peripheral nerve) (spinal cord) → Encounter for adjustment and management of neurostimulator
    FY2020 changes
  • FY2020 — 2019-10-01
    Short description revised
    Encounter for adjust and mgmt of neuropacemaker (brain) → Encounter for adjustment and management of neurostimulator
    FY2020 changes

Verify Before Coding

  • Billable — reportable as written.

From the code registry, the Medicare Code Editor, and the MS-DRG Definitions Manual. Check it against a full claim.

Referenced by Other Codes

Clinical classification (AHRQ CCSR):FAC009 — Implant, device or graft related encounter (default).

Clinical Classifications Software Refined (CCSR) for ICD-10-CM Diagnoses. Healthcare Cost and Utilization Project (HCUP), Agency for Healthcare Research and Quality.

Potential MS-DRG Relationships (FY2026)

Not on the CMS CC/MCC list — as a secondary diagnosis this code does not change MS-DRG severity.

Named in the grouper logic of 3 MS-DRGs: DRG 091 (MDC 01), DRG 092 (MDC 01), DRG 093 (MDC 01).

From the CMS MS-DRG Definitions Manual (Appendices B and C). Actual DRG assignment depends on the complete claim.

Official ICD-10-CM tabular notes on other codes that name Z45.42 or its code family.

2 Excludes2 notes: Z46 (via Z45.-), Z46.2 (via Z45.4.-).

Nearest Codes in This Family

Official ICD-10-CM classifications closest to Z45.42 in its code family, with their registry titles.

  • Z45.320 — Encounter for adjustment and management of bone conduction device
  • Z45.321 — Encounter for adjustment and management of cochlear device
  • Z45.328 — Encounter for adjustment and management of other implanted hearing device
  • Z45.4 — Encounter for adjustment and management of implanted nervous system device
  • Z45.41 — Encounter for adjustment and management of cerebrospinal fluid drainage device
  • Z45.49 — Encounter for adjustment and management of other implanted nervous system device
  • Z45.8 — Encounter for adjustment and management of other implanted devices
  • Z45.81 — Encounter for adjustment or removal of breast implant
  • Z45.811 — Encounter for adjustment or removal of right breast implant
  • Z45.812 — Encounter for adjustment or removal of left breast implant

View all codes in the Z45 family

Indexed Clinical Terms (13)

Clinical term phrases from the official ICD-10-CM Index to Diseases and Injuries that map to this code.

  • 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