Z18 - Retained foreign body fragments

Version 2023
Short Description:Retained foreign body fragments
Long Description:Retained foreign body fragments
Status: Not Valid for Submission
Version:ICD-10-CM 2023
Code Classification:
  • Factors influencing health status and contact with health services (Z00–Z99)
    • Retained foreign body fragments (Z18)
      • Retained foreign body fragments (Z18)

Z18 is a non-specific and non-billable ICD-10 code code, consider using a code with a higher level of specificity for a diagnosis of retained foreign body fragments. The code is not specific and is NOT valid for the year 2023 for the submission of HIPAA-covered transactions. Category or Header define the heading of a category of codes that may be further subdivided by the use of 4th, 5th, 6th or 7th characters.

Specific Coding for Retained foreign body fragments

Non-specific codes like Z18 require more digits to indicate the appropriate level of specificity. Consider using any of the following ICD-10 codes with a higher level of specificity when coding for retained foreign body fragments:

  • NON-BILLABLE CODE - Z18.0 for Retained radioactive fragments
  • BILLABLE CODE - Use Z18.01 for Retained depleted uranium fragments
  • BILLABLE CODE - Use Z18.09 for Other retained radioactive fragments
  • NON-BILLABLE CODE - Z18.1 for Retained metal fragments
  • BILLABLE CODE - Use Z18.10 for Retained metal fragments, unspecified
  • BILLABLE CODE - Use Z18.11 for Retained magnetic metal fragments
  • BILLABLE CODE - Use Z18.12 for Retained nonmagnetic metal fragments
  • BILLABLE CODE - Use Z18.2 for Retained plastic fragments
  • NON-BILLABLE CODE - Z18.3 for Retained organic fragments
  • BILLABLE CODE - Use Z18.31 for Retained animal quills or spines
  • BILLABLE CODE - Use Z18.32 for Retained tooth
  • BILLABLE CODE - Use Z18.33 for Retained wood fragments
  • BILLABLE CODE - Use Z18.39 for Other retained organic fragments
  • NON-BILLABLE CODE - Z18.8 for Other specified retained foreign body
  • BILLABLE CODE - Use Z18.81 for Retained glass fragments
  • BILLABLE CODE - Use Z18.83 for Retained stone or crystalline fragments
  • BILLABLE CODE - Use Z18.89 for Other specified retained foreign body fragments
  • BILLABLE CODE - Use Z18.9 for Retained foreign body fragments, unspecified material

Tabular List of Diseases and Injuries

The Tabular List of Diseases and Injuries is a list of ICD-10 codes, organized "head to toe" into chapters and sections with coding notes and guidance for inclusions, exclusions, descriptions and more. The following references are applicable to this diagnosis code:


This note appears immediately under a three character code title to further define, or give examples of, the content of the category.

Type 1 Excludes

Type 1 Excludes
A type 1 excludes note is a pure excludes note. It means "NOT CODED HERE!" An Excludes1 note indicates that the code excluded should never be used at the same time as the code above the Excludes1 note. An Excludes1 is used when two conditions cannot occur together, such as a congenital form versus an acquired form of the same condition.

Patient Education

Foreign Bodies

If you've ever gotten a splinter or had sand in your eye, you've had experience with a foreign body. A foreign body is something that is stuck inside you but isn't supposed to be there. You may inhale or swallow a foreign body, or you may get one from an injury to almost any part of your body. Foreign bodies are more common in small children, who sometimes stick things in their mouths, ears, and noses.

Some foreign bodies, like a small splinter, do not cause serious harm. Inhaled or swallowed foreign bodies may cause choking or bowel obstruction and may require medical care.

[Learn More in MedlinePlus]

Code History