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Z18.09

Z18.09: Other retained radioactive fragments

Billable / specific codeICD-10-CMPOA exempt

Z18.09 is a billable, specific ICD-10-CM code for other retained radioactive fragments. It is valid for submission on a claim.

Check Z18.09 with the rest of the claim: free scrubber

Inclusion terms

Alternative wordings a physician may use in the chart for this same code.

  • Other retained depleted isotope fragments
  • Retained nontherapeutic radioactive fragments

Excludes1 inherited from the categories above Z18.09

A category’s note binds every code beneath it.

Written on Z18: Retained foreign body fragments

  • 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

Other codes that can never be billed with Z18.09

Their own Excludes1 notes name this code, so the conflict is not listed above.

  • Z03.82Encounter for observation for suspected foreign body ruled out
  • Z18.1Retained metal fragments

Risk adjustment

No CMS-HCC V28 category: this code does not change a RAF score.

Alphabetic index entries that lead here

  • Retained›foreign body fragments›depleted isotope
  • Retained›foreign body fragments›nontherapeutic radioactive
  • Retained›foreign body fragments›radioactive NEC(nontherapeutic)
  • Retained›fragments›depleted isotope
  • Retained›fragments›nontherapeutic radioactive
  • Retained›fragments›radioactive NEC(nontherapeutic)

Code history

Unchanged in every release from FY2024 to FY2027.

Other codes under Z18.0

ICD-10-CMFY2027· effective October 1, 2026

Loaded directly from the CMS/NCHS ICD-10-CM public-domain release: see data sources and our editorial policy. If this page disagrees with the CMS tabular list, this page is wrong. Reference information for professional coders; not medical or billing advice.