Z18 ICD-10-CM Code: Retained foreign body fragments
A clear reference for the official code description, hierarchy, and related coding information from the FY 2027 U.S. release.
Code definition
Official description
Z18Retained foreign body fragments
ICD-10-CM diagnosis code · United States clinical modification
Classification
Where Z18 sits
- 1
Chapter 21
Factors influencing health status and contact with health services (Z00-Z99)
- 2
Section
Retained foreign body fragments (Z18)
- 3
Category Z18
Retained foreign body fragments
- 4
Code Z18
Retained foreign body fragments
More specific choices
Codes under Z18
Z18 is a non-billable category. Choose the child code that best matches the documented diagnosis.
Documentation details
Notes for this code
Inclusion terms
No inclusion terms are listed for Z18.
Code first
No “code first” instruction is listed for Z18.
Use additional code
No “use additional code” instruction is listed for Z18.
Excludes1
Conditions that should not be reported together with this code.
- artificial joint prosthesis status (Z96.6-)
- foreign body accidentally left during a procedure (T81.5-)
- foreign body entering through orifice (T15-T19)
- in situ cardiac device (Z95.-)
- organ or tissue replaced by means other than transplant (Z96.-, Z97.-)
- organ or tissue replaced by transplant (Z94.-)
- personal history of retained foreign body fully removed Z87.821
- superficial foreign body (non-embedded splinter) - code to superficial foreign body, by site
Excludes2
Conditions not included here that may be reported separately when present.
No Excludes2 note is listed for Z18.
Transparency
Source and release
This reference is generated from Vero’s ICD-10-CM description, hierarchy, and code-note dataset. The visible content and structured data share that source.
Review the CDC/NCHS ICD-10-CM sourceCode-specific guidance
Frequently asked questions
What does ICD-10-CM code Z18 mean?
Z18 is the FY 2027 U.S. ICD-10-CM code for “Retained foreign body fragments.”
Is Z18 a billable or specific ICD-10-CM code?
No. Z18 has more specific child codes in the FY 2027 reference data. Select the code that matches the documentation and confirm the active code set and payer requirements.
Where is Z18 located in ICD-10-CM?
Z18 is listed in Chapter 21, Factors influencing health status and contact with health services (Z00-Z99), within Retained foreign body fragments (Z18) (Z18–Z18), under category Z18, Retained foreign body fragments.
What coding notes are listed for Z18?
No inclusion terms are listed for Z18 in this reference record. No code-first instruction is listed. Excludes1 notes: artificial joint prosthesis status (Z96.6-); foreign body accidentally left during a procedure (T81.5-); foreign body entering through orifice (T15-T19); in situ cardiac device (Z95.-); organ or tissue replaced by means other than transplant (Z96.-, Z97.-); organ or tissue replaced by transplant (Z94.-); personal history of retained foreign body fully removed Z87.821; superficial foreign body (non-embedded splinter) - code to superficial foreign body, by site. No Excludes2 note is listed.
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