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ICD-10-CM 2027 diagnosis code

Z45.819Encounter for adjustment or removal of unspecified breast implant

✓ Billable / specificPOA exempt

Z45.819 is a valid, billable ICD-10-CM code for encounter for adjustment or removal of unspecified breast implant. It can be reported on claims for dates of service from October 1, 2026 – September 30, 2027.Short description: Encounter for adjustment or removal of unsp breast implant

Code unchanged since ICD-10-CM took effect on October 1, 2015. Source: official FY2027 ICD-10-CM release from CDC/NCHS and CMS. Page updated September 29, 2026. About our data

About Z45.819

Z45.819 is the ICD-10-CM diagnosis code for encounter for adjustment or removal of unspecified breast implant. It belongs to category Z45 (encounter for adjustment and management of implanted device), block Z40-Z53 (Encounters for other specific health care) and chapter 21 (factors influencing health status and contact with health services). It is billable, so it can be reported on its own for dates of service from October 1, 2026 through September 30, 2027.

Within Z45.81, choose Z45.819 (unspecified breast implant) only when documentation doesn't support a more specific option: right breast implant (Z45.811) and left breast implant (Z45.812).

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 951 (Other Factors Influencing Health Status, relative weight 0.5577), in MDC 23 (Factors Influencing Health Status and Other Contacts with Health Services), as a principal or secondary diagnosis. The DRG a claim lands in depends on the principal diagnosis, procedures and any CC/MCC secondary diagnoses.

It is exempt from present-on-admission (POA) reporting, so no POA indicator is required.

It has been part of ICD-10-CM since the code set took effect on October 1, 2015 and hasn't changed since.

Before ICD-10, this condition was coded in ICD-9-CM as V52.4 (fitting and adjustment of breast prosthesis and implant).

Notes that apply from higher levels

Instructions written at a parent level also apply to Z45.819.

› From Z45.81 Encounter for adjustment or removal of breast implant
Excludes1
  • complications of breast implant (T85.4-)
  • encounter for initial breast implant insertion for cosmetic breast augmentation (Z41.1)
  • encounter for breast reconstruction following mastectomy (Z42.1)
› From Z45 Encounter for adjustment and management of implanted device
Includes
  • removal or replacement of implanted device
Excludes1
  • malfunction or other complications of device - see Alphabetical Index
Excludes2
  • encounter for fitting and adjustment of non-implanted device (Z46.-)

Broader instructions also apply from Z40-Z53 Encounters for other specific health care and Chapter 21: Factors influencing health status and contact with health services.

MS-DRG v44.0 grouping

All DRGs →

Inpatient MS-DRGs this diagnosis can group to, as the principal or a secondary diagnosis, depending on the rest of the claim.

MDC 23 · Factors Influencing Health Status and Other Contacts with Health Services

ICD-9-CM equivalent

Converter →
  • V52.4Fitting and adjustment of breast prosthesis and implantapproximate

From the CMS 2018 General Equivalence Mappings (GEMs), the final GEMs release.

Code history

  1. 2016
  2. 2017
  3. 2018
  4. 2019
  5. 2020
  6. 2021
  7. 2022
  8. 2023
  9. 2024
  10. 2025
  11. 2026
  12. 2027
  • FY2016 (effective 10/1/2015): Added (first year of ICD-10-CM)
  • No changes since FY2016.

Common questions about Z45.819

Is Z45.819 billable?

Yes. Z45.819 is a billable/specific ICD-10-CM code valid for FY2027 (October 1, 2026 – September 30, 2027).

Can Z45.819 be used as a principal diagnosis?

Yes. The Medicare Code Editor doesn't restrict Z45.819 as a principal diagnosis.

Is Z45.819 a CC or MCC?

No. Z45.819 is neither a CC nor an MCC under MS-DRG v44.0.

What DRG does Z45.819 group to?

Z45.819 is used in the MS-DRG v44.0 logic for MS-DRG 951 (Other Factors Influencing Health Status). Which one applies depends on whether it is the principal diagnosis and on the rest of the claim.

What is the ICD-9 code for Z45.819?

The CMS General Equivalence Mappings map Z45.819 to ICD-9-CM V52.4.