2026 ICD-10-CM Diagnosis Code Z44.31Encounter for fitting and adjustment of external right breast prosthesis

ICD-10-CM Codes›Z00–Z99›Z40-Z53›Z44

ICD-10-CM Z44.31
CMSSource: CMS FY 2026 ICD-10-CM dataset · Effective Oct 1, 2025 – Sep 30, 2026

Z44.31 is a billable ICD-10-CM diagnosis code for encounter for fitting and adjustment of external right breast prosthesis. 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
Z44.31
Billable Status
Yes — Valid for Submission
Code Describes
Encounter for fitting and adjustment of external right breast prosthesis
Short Description
Encounter for fit/adjst of external right breast prosthesis
Parent Code
Z44.3
Encounter for fitting and adjustment of external breast prosthesis

Code Classification

ChapterZ00–Z99Factors influencing health status and contact with health services
SectionZ40-Z53Encounters for other specific health care
CategoryZ44Encounter for fitting and adjustment of external prosthetic device
This CodeZ44.31Encounter for fitting and adjustment of external right breast prosthesis

Present on Admission (POA)Billing

Z44.31 is exempt from POA reporting on inpatient claims to general acute care hospitals. Review other POA exempt codes.

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

Patient EducationClinical

Breast Reconstruction

If you need a mastectomy, you have a choice about whether or not to have surgery to rebuild the shape of the breast. Instead of breast reconstruction, you could choose to wear a breast form that replaces the breast, wear padding inside your bra, or do nothing. All of these options have pros and cons.

Read the full article at MedlinePlus

Courtesy of MedlinePlus, a service of the U.S. National Library of Medicine.

Convert Z44.31 to ICD-9-CMHistory

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

ICD-9-CM
V52.4 Fit/adj breast pros/impl
Approximate The match is approximate rather than exact.

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 Z44.31Overview

Is Z44.31 a billable code?

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

Is Z44.31 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 fitting and adjustment of external right breast prosthesis on inpatient claims.

What is the ICD-9 equivalent of Z44.31?

Under the General Equivalence Mappings, encounter for fitting and adjustment of external right breast prosthesis converts to ICD-9-CM V52.4 (fit/adj breast pros/impl). The mapping is approximate, so confirm the match fits the documentation.