2026 ICD-10-CM Diagnosis Code Z44Encounter for fitting and adjustment of external prosthetic device

ICD-10-CM Codes›Z00–Z99›Z40-Z53›Z44

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

Z44 is a non-billable ICD-10-CM category code for encounter for fitting and adjustment of external prosthetic device, so it cannot be submitted on claims. Use a more specific code from this category instead, such as Z44.001, Z44.002, Z44.009, and Z44.011.

Code Identity

ICD-10-CM Code
Z44
Billable Status
No — Non-Billable Category
Code Describes
Encounter for fitting and adjustment of external prosthetic device
Chapter
Z40-Z53
Encounters for other specific health care

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 CodeZ44Encounter for fitting and adjustment of external prosthetic device

Specific Coding for Encounter for fit/adjst of external prosthetic deviceOverview

Non-specific codes like Z44 require more characters. Use one of these billable codes instead:

  • Z44.0 for Encounter for fitting and adjustment of artificial arm

  • Z44.00 for Encounter for fitting and adjustment of unspecified artificial arm

  • Z44.01 for Encounter for fitting and adjustment of complete artificial arm

  • Z44.02 for Encounter for fitting and adjustment of partial artificial arm

  • Z44.1 for Encounter for fitting and adjustment of artificial leg

  • Z44.10 for Encounter for fitting and adjustment of unspecified artificial leg

  • Z44.11 for Encounter for fitting and adjustment of complete artificial leg

  • Z44.12 for Encounter for fitting and adjustment of partial artificial leg

  • Z44.2 for Encounter for fitting and adjustment of artificial eye

  • Use Z44.20 for Encounter for fitting and adjustment of artificial eye, unspecified

  • Use Z44.21 for Encounter for fitting and adjustment of artificial right eye

  • Use Z44.22 for Encounter for fitting and adjustment of artificial left eye

  • Z44.3 for Encounter for fitting and adjustment of external breast prosthesis

  • Use Z44.30 for Encounter for fitting and adjustment of external breast prosthesis, unspecified breast

  • Use Z44.31 for Encounter for fitting and adjustment of external right breast prosthesis

  • Use Z44.32 for Encounter for fitting and adjustment of external left breast prosthesis

  • Use Z44.8 for Encounter for fitting and adjustment of other external prosthetic devices

  • Use Z44.9 for Encounter for fitting and adjustment of unspecified external prosthetic device

Tabular List NotesGuidance

Coding notes and annotation back-references applicable to this code.

Includes

  • removal or replacement of external prosthetic device

Type 1 Excludes

  • malfunction or other complications of device - see Alphabetical Index
  • presence of prosthetic device Z97

Patient EducationClinical

Artificial Limbs

People can lose all or part of an arm or leg for a number of reasons. Common ones include:

Read the full article at MedlinePlus

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

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 Z44Overview

Is Z44 a billable code?

No. This is a category header that groups the codes for encounter for fitting and adjustment of external prosthetic device, and headers cannot be submitted on claims. Claims for encounter for fitting and adjustment of external prosthetic device need a more specific code from this category, such as Z44.001, Z44.002, and Z44.009.