ICD-10-CM
ICD-10 code for Fitting (and adjustment) (of) prosthesis (external): Z44.9
The ICD-10-CM index points "Fitting (and adjustment) (of) prosthesis (external)" to Z44.9, Encounter for fitting and adjustment of unspecified external prosthetic device. Z44.9 is a billable code.
Source: CDC ICD-10-CM FY2027 Alphabetic Index file dated June 16, 2026. Publisher page
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Index subterms
A header groups codes and is not billed. A billable code is one you can report.
More specific codes in Z44
A header groups codes and is not billed. A billable code is one you can report.
- Z44Encounter for fitting and adjustment of external prosthetic deviceHeader
- Z44.0Encounter for fitting and adjustment of artificial armHeader
- Z44.00Encounter for fitting and adjustment of unspecified artificial armHeader
- Z44.001Encounter for fitting and adjustment of unspecified right artificial armBillable
- Z44.002Encounter for fitting and adjustment of unspecified left artificial armBillable
- Z44.009Encounter for fitting and adjustment of unspecified artificial arm, unspecified armBillable
- Z44.01Encounter for fitting and adjustment of complete artificial armHeader
- Z44.011Encounter for fitting and adjustment of complete right artificial armBillable
- Z44.012Encounter for fitting and adjustment of complete left artificial armBillable
- Z44.019Encounter for fitting and adjustment of complete artificial arm, unspecified armBillable
- Z44.02Encounter for fitting and adjustment of partial artificial armHeader
- Z44.021Encounter for fitting and adjustment of partial artificial right armBillable
- Z44.022Encounter for fitting and adjustment of partial artificial left armBillable
- Z44.029Encounter for fitting and adjustment of partial artificial arm, unspecified armBillable
- Z44.1Encounter for fitting and adjustment of artificial legHeader
- Z44.10Encounter for fitting and adjustment of unspecified artificial legHeader
- Z44.101Encounter for fitting and adjustment of unspecified right artificial legBillable
- Z44.102Encounter for fitting and adjustment of unspecified left artificial legBillable
- Z44.109Encounter for fitting and adjustment of unspecified artificial leg, unspecified legBillable
- Z44.11Encounter for fitting and adjustment of complete artificial legHeader
- Z44.111Encounter for fitting and adjustment of complete right artificial legBillable
- Z44.112Encounter for fitting and adjustment of complete left artificial legBillable
- Z44.119Encounter for fitting and adjustment of complete artificial leg, unspecified legBillable
- Z44.12Encounter for fitting and adjustment of partial artificial legHeader
- Z44.121Encounter for fitting and adjustment of partial artificial right legBillable
- Z44.122Encounter for fitting and adjustment of partial artificial left legBillable
- Z44.129Encounter for fitting and adjustment of partial artificial leg, unspecified legBillable
- Z44.2Encounter for fitting and adjustment of artificial eyeHeader
- Z44.20Encounter for fitting and adjustment of artificial eye, unspecifiedBillable
- Z44.21Encounter for fitting and adjustment of artificial right eyeBillable
- Z44.22Encounter for fitting and adjustment of artificial left eyeBillable
- Z44.3Encounter for fitting and adjustment of external breast prosthesisHeader
- Z44.30Encounter for fitting and adjustment of external breast prosthesis, unspecified breastBillable
- Z44.31Encounter for fitting and adjustment of external right breast prosthesisBillable
- Z44.32Encounter for fitting and adjustment of external left breast prosthesisBillable
- Z44.8Encounter for fitting and adjustment of other external prosthetic devicesBillable
- Z44.9Encounter for fitting and adjustment of unspecified external prosthetic deviceBillable
Excludes1
Excludes1 means these codes are not reported together.
From Z44. A note on a category applies to every code under it.
- malfunction or other complications of device - see Alphabetical Index
- Z97.-Presence of prosthetic device
Related pages
- Z44.9 code detailsNotes, nearby codes, CMS-HCC group
- Category Z44Every code under it
- Chapter 21Factors influencing health status
- ICD-10 codes by conditionA to Z
- Check a list of ICD-10 codes
- Denial code CO-11Diagnosis does not support the procedure
- Denial code CO-146Diagnosis invalid for the date of service
- HCPCS Level II code lookup
Questions
What is the ICD-10 code for Fitting (and adjustment) (of) prosthesis (external)?
The ICD-10-CM index points "Fitting (and adjustment) (of) prosthesis (external)" to Z44.9, Encounter for fitting and adjustment of unspecified external prosthetic device. Z44.9 is a billable code.
Is Z44.9 billable?
Yes. Z44.9 is a billable code in the FY2027 ICD-10-CM file. Use a more specific code when the record documents one.
What documentation notes apply to Z44.9?
The CDC tabular list gives 2 Excludes1 notes (not coded together) for Z44.9 and the categories above it. They are listed on this page.
What chapter is Z44.9 in?
Chapter 21. Factors influencing health status.
When do ICD-10-CM codes change?
Every October 1, with the new fiscal year file. Some years add April 1 updates. This page uses the FY2027 file, effective October 1, 2026.