ICD-10-CM 2027
ICD-10 code for cardiac recorder interrogation
Encounter for adjustment and management of other cardiac device
From the official ICD-10-CM alphabetic index entry “Interrogation › cardiac (event) (loop) recorder”. Page updated September 29, 2026.
About coding cardiac recorder interrogation
The ICD-10-CM code for cardiac recorder interrogation is Z45.09 (Encounter for adjustment and management of other cardiac device).
Within Z45.0, choose Z45.09 (other cardiac device) only when documentation doesn't support a more specific option: cardiac pacemaker (Z45.01) and automatic implantable cardiac defibrillator (Z45.02).
It is not a CC or MCC, so as a secondary diagnosis it doesn't change the MS-DRG severity level.
In MS-DRG v44.0, it is part of the grouping logic for DRG 314 (Other Circulatory System Diagnoses with MCC, relative weight 2.0873), DRG 315 (Other Circulatory System Diagnoses with CC, relative weight 0.9508) and DRG 316 (Other Circulatory System Diagnoses without CC/MCC, relative weight 0.6677), in MDC 05 (Diseases and Disorders of the Circulatory System), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.
Common questions about cardiac recorder interrogation ICD-10 codes
What is the ICD-10 code for cardiac recorder interrogation?
- Z45.09 — Encounter for adjustment and management of other cardiac device.
Is Z45.09 billable?
- Yes. Z45.09 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).
Can Z45.09 be used as a principal diagnosis?
- It can, but When it is the principal diagnosis, Medicare considers it a questionable reason for an inpatient admission, so claims may be reviewed.
Is Z45.09 a CC or MCC?
- No. Z45.09 is neither a CC nor an MCC under MS-DRG v44.0.