Z45.02 — Encounter for adjustment and management of automatic implantable cardiac defibrillator
Is Z45.02 billable?
Yes — Z45.02 is billable for FY2027. Z45.02 is a valid, billable ICD-10-CM code at the highest level of specificity in its branch. Z45.02 may be submitted for encounters from October 1, 2026 through September 30, 2027.
Z45.02 at a glance
| Code | Z45.02 |
|---|---|
| Description | Encounter for adjustment and management of automatic implantable cardiac defibrillator |
| Billable | Yes |
| Code set | ICD-10-CM FY2027 |
| Valid for encounters | October 1, 2026 – September 30, 2027 |
What Medicare edits apply to Z45.02?
The Medicare Code Editor screens inpatient claims before they are grouped. These edits name Z45.02 directly.
CMS does not consider this code, on its own, sufficient justification for admission to an acute care hospital when reported as the principal diagnosis.
Which MS-DRGs does Z45.02 group to?
Z45.02 sits in MDC 05 and helps define the logic of 3 MS-DRGs (version 44, FY2027). Which one a stay actually groups to also depends on procedures and secondary diagnoses.
- 314Other Circulatory System Diagnoses with MCCmedical
- 315Other Circulatory System Diagnoses with CCmedical
- 316Other Circulatory System Diagnoses without CC/MCCmedical
How is Z45.02 listed in the Alphabetic Index?
These are the routes through the Alphabetic Index that lead to Z45.02. They show the wording a clinician may have documented, which often differs from the Tabular description.
- Fitting › automatic implantable cardiac defibrillator (and adjustment) (of)
- Fitting › CRT-D (and adjustment) (of)
- Interrogation › cardiac defibrillator
- Worn out › cardiac › defibrillator
- Admission › adjustment › device NEC › implanted › cardiac › defibrillator (for)
- Admission › adjustment › device NEC › implanted › cardiac › resynchronization therapy defibrillator (for)
Inclusion terms
Alternative wording in documentation that is classified to Z45.02.
- Encounter for adjustment and management of automatic implantable cardiac defibrillator with synchronous cardiac pacemaker
- Encounter for adjustment and management of cardiac resynchronization therapy defibrillator (CRT-D)
Excludes1 — never code together — inherited from Z45
The conditions below can never be reported together with Z45.02 on the same claim. An Excludes1 note means the two conditions cannot occur in the same patient, so reporting both is a coding error.
- malfunction or other complications of device - see Alphabetical Index
Excludes2 — not included here — inherited from Z40-Z53
The conditions below are not part of Z45.02, but a patient may have both at the same time. When documentation supports it, Z45.02 and the excluded code may both be reported.
- follow-up examination for medical surveillance after treatment (Z08-Z09)
Excludes2 — not included here — inherited from Z45
The conditions below are not part of Z45.02, but a patient may have both at the same time. When documentation supports it, Z45.02 and the excluded code may both be reported.
- encounter for fitting and adjustment of non-implanted device (Z46.-)
How long has Z45.02 existed?
Z45.02 has been in ICD-10-CM since at least FY2016, the earliest fiscal year on record here.
Derived from the official order files for FY2016–FY2026. FY2017 and FY2020 publish no order file, so those years are not covered.